Following a bench trial, defendant was convicted of armed robbery, MCL 750.529; MSA 28.797, assault with intent to rob while armed, MCL 750.89; MSA 28.284, and possession of a firearm during the commission of a felony, MCL 750.227b; MSA 28.424(2). Defendant was sentenced to concurrent terms of four to twenty years’ imprisonment for the armed robbery and assault with intent to rob while armed convictions, and the mandatory two-year consecutive term for the felony-firearm conviction. Defendant appeals as of right. We affirm.
At approximately 10:00 P.M. on March 6, 1995, a man later identified as defendant approached a car occupied by Ricky Gray and Veda Parker. Defendant took out a handgun, tapped on the driver’s side window of the car, and demanded that the car door be opened. When the door was opened, defendant demanded Gray’s wallet, Parker’s purse, and their jewelry and any other personal belongings. Gray handed his wallet to defendant. Gray told the defendant that Parker’s *512purse was in the trunk and opened the trunk. Defendant then went to take Parker’s purse from the trunk. At that point, a police car entered the parking lot, and defendant fled. The police apprehended defendant, and Gray identified him as the robber.
i
Defendant first contends that his waiver of the constitutional right to a jury trial was not voluntary because it was based on defense counsel’s representation to him that if he proceeded with a jury trial, he would receive a harsher sentence.1 We disagree.
A valid waiver of the constitutional right to a trial by jury must be voluntary. MCR 6.402(B); People v Shields, 200 Mich App 554, 560-561; 504 NW2d 711 (1993). A court in passing sentence may not consider factors that violate a defendant’s constitutional rights. People v Miller, 179 Mich App 466, 469; 446 NW2d 294 (1989). A court must not state or imply alternative sentencing possibilities based on future procedural choices, such as an exercise of the right to a trial by jury or by the court. People v Cobbs, 443 Mich 276, 283; 505 NW2d 208 (1993).
Following his convictions and sentencing, defendant moved for a new trial, challenging the voluntariness of his waiver of a jury trial. The transcript of the hearing regarding defendant’s motion for a new trial supports the trial court’s findings that defendant’s *513trial counsel advised defendant that there was a high probability of conviction before either a jury or a judge, that the judge had substantial sentencing discretion within the guidelines range and usually sentenced within the guidelines, and that choosing a bench trial would save defendant some time in prison. The trial court rejected defendant’s testimony that trial counsel told him that a conviction by a jury would result in a maximum sentence.
Defendant and the dissenting judge argue that an implied promise of leniency if a jury trial is waived is the equivalent of an implied threat of punishment if the right to a jury trial is exercised. There is a certain logical symmetry to that premise, but, in the words of Justice Oliver Wendell Holmes, “[t]he life of the law has not been logic: it has been experience.” Holmes, The Common Law (1881), p 1.
The advice defense counsel gave defendant was based on reality and is neither uncommon nor improper. See, e.g., LaFave & Israel, Criminal Procedure (Hornbook Series, 2d ed), § 22.1(h), p 961 (noting with regard to waiver of a jury trial that “[j]ury waiver tends to vary depending upon the offense category, and the pattern is similar to that for guilty pleas, suggesting that the motivations are similar: the expectation of a lesser sentence”); Carter v Holt, 817 F2d 699, 700 (CA 11, 1987) (holding that the defendant was not denied effective assistance of counsel although defense counsel advised the defendant to waive a jury trial in part on the basis of his belief that “the likely punishment would be less in a bench trial”).
To be sure, informing a defendant that he is likely to be convicted in either a jury trial or a bench trial, *514that most judges, including the one presiding in the defendant’s case, will provide a sentence concession to a defendant who elects a bench trial, and that the particular judge hearing the case will provide a fair trial, might, indeed, cause the defendant to waive the constitutional right to be tried by a jury. That advice, however, is not the equivalent of a warning that the defendant will be penalized for opting for a jury trial, and it does not render a resulting bench trial involuntary or the product of coercion. Such a waiver is informed, not “coerced.”
The trial judge’s statements at the posttrial hearing regarding defendant’s motion for a new trial made clear that it was the judge’s practice to provide a sentence concession to defendants who waive a jury trial, but it was not the judge’s practice to penalize defendants at sentencing for exercising the right to a jury trial.2 The judge said:
The fact is if any trial Judge ever punished somebody for the exercise of the right to a trial by jury, such trial Judge ought to be barred from ever being a trial Judge again. I am not so dumb as to think that there may [sic] be some Judges who do that. I doubt that there are as many as the literature — -I don’t mean the legal literature — as the public might think or that sometimes defense lawyers may claim. But I think on occasion it’s occurred. It certainly has never occurred in my courtroom ever. . . .
* * *
. . . [W]hen I sentence somebody who has a jury trial in front of me, I owe them nothing except what the law gives them. ... I consider the seriousness of the offense, the background of the offender, I read the Pre-sentence Report, *515I myself determine what I think an appropriate sentence is, then I score the guidelines. If the sentence I’ve determined is within guidelines that becomes the sentence the defendant gets. If the sentence I determine is above guidelines then I strive mightily to bring it down within guidelines. If the sentence is below guidelines I don’t strive as mightily to raise it, but I do on occasion raise it to put it within guidelines. But that’s actually functionally how I sentence. But if it is a bench trial and I score it, then I lower the sentence to reflect the fact — before I even score the guidelines — to reflect the fact that is [sic] been a bench trial. And somebody may say why do you do that? That’s easy. And here’s where I get to the semantics issue with Mr. Daly [defendant’s appellate counsel]. When I first was on the bench 85 percent of my trials were jury trials. So I would conduct 50 trials a year, 40 or more of which were jury trials. Then we progressed to being able to try 75 cases per year because maybe 35 were jury and 40 were bench. I can now try on average 100 cases a year because 20 will be jury trials and 80 will be bench trials. For the last year that I kept all of the collected statistics, that was for the full year of 1994,1 had 104 trials, 19 were juries, four of which were hung. And well, the remainder would all be bench trials. . . . And my docket now is current. I’m among the most current Judges in this bench. . . . And why do defendant’s [sic] waive? Because their attorneys tell them precisely what Mr. Evelyn [defendant’s trial counsel] said he told Mr. Godbold in this case. The attorney makes a judgment about the likelihood of winning or losing either before a bench trial or a jury trial. I want attorneys to tell defendants. I’ve never told them to tell them that, but I do want attorneys to tell defendants that they’re going to get a sentence confession [sic concession] for a bench trial if they do. That does not mean the flip side, that they get punished for exercising their right to trial because they do not. It is simply that the Court owes the defendant nothing for saving the Court time.
. . . Now, the United States Supreme Court and the Michigan Supreme Court have recognized where parties come together and they plea bargain, a Judge is perfectly right to *516lower sentences in light of the saving of court time. If that is recognized in a plea based system, it certainly ought to be recognized in a waiver based system ....
The sentencing transcript does not suggest, nor does defendant argue, that the trial court based defendant’s sentence on any factor other than proper sentencing considerations. Thus, the question is whether a system that allows judges to reduce otherwise valid sentences for defendants who opt for bench trials necessarily punishes defendants who opt for jury trials, or needlessly encourages waiver.3 United States v Jackson, 390 US 570; 88 S Ct 1209; 20 L Ed 2d 138 (1968).
To find that defendant’s waiver was coerced, one must conclude either that defendant would have been punished for opting for a jury trial or that defendant’s receiving a lesser sentence after a waiver of a jury trial is the equivalent of punishing him for the exercise of the right to a jury trial. As discussed above, there is no basis for concluding that, had defendant exercised his right to a jury trial, the court would have considered his exercise of his right to a jury trial *517as a factor in fashioning defendant’s sentence after conviction by a jury. The record is to the contrary.4
The prospect of leniency if a right is waived is not the equivalent of a penalty for exercise of that right. Corbitt v New Jersey, 439 US 212, 219-220; 99 S Ct 492; 58 L Ed 2d 466 (1978). The analysis of the dissenting opinion would suggest that the multitude of defendants who have waived jury trials or pleaded guilty on the basis of expectation of some degree of leniency in sentencing have done so involuntarily, as the result of coercion. The sentencing practice articulated by the judge in the instant case is common, and is either infirm or not, without regard to whether the judge candidly acknowledges the practice. An appeal in a jury waiver case cannot hinge on whether a particular trial judge articulated the judge’s practice on the record. We hold that where there is no express or implied threat of punishment for exercising the constitutional right to a jury trial, such a threat does not emerge solely from the expectation of leniency, based on such a sentencing practice, where the right is waived.
While the consequence of exercising the right to a jury trial before a judge who has such a sentencing practice may be the imposition of a greater individualized sentence than the individualized sentence that would have been imposed had the right to a jury trial been waived, it does not follow that the greater sentence is a punishment or penalty. If the practice as described by the judge in the instant case were truly *518to be eliminated,5 then all defendants would, at least in theory, receive an individualized sentence as fashioned by the trial judge based on the offense and the offender, without regard to whether a jury is waived. Under such a system, this defendant would have received the necessarily higher individualized sentence — necessarily higher because there would be no concession for a jury waiver — whether he waived a trial by jury or not. Thus, in such a regime, all defendants would receive, as would this defendant had he opted for a jury trial, a greater sentence not because of the exercise of the right to a jury trial, but because it is the proper sentence according to the law applicable to sentencing decisions.
In order to find that the practice as articulated by the trial judge here imposes a penalty on the exercise of the right to a trial by jury, one must conclude that defendant was entitled to a sentence concession without regard to whether he waived his right to a trial by jury. Thus, this Court must be prepared to hold that all defendants — those who waive a trial by jury and those who do not — have the right to the sentence concession afforded defendant here, so that a trial judge who has heretofore afforded sentence concessions to defendants who waive the right to a trial by jury must now afford the same concessions to those who do not. All defendants would then be entitled to an individualized sentence that is lower than the individualized sentence that is based solely on the offender and the offense. It is only by recognizing a right to a sentence concession in all defendants that *519the Court can reach the conclusion that defendant would have been penalized had he opted for a jury trial. The Michigan Supreme Court might choose to impose such a requirement in the exercise of its supervisory power, but the constitution does not so require. See Corbitt, supra.
The question remains whether the articulated sentencing practice is unconstitutional because it needlessly encourages defendants to waive the right to a trial by jury. In Corbitt, supra, the United States Supreme Court upheld a New Jersey statute under which a defendant found guilty by a jury of first-degree murder faced a mandatory life sentence, but which permitted defendants facing such a charge to invoke a procedure permitting them to enter a non vult plea pursuant to which the trial judge was not obliged to fix the degree of murder between first and second degree and had the discretion to sentence the defendant either to mandatory life imprisonment or to a lesser term of years as provided for second-degree murder. The Court explained
that not every burden on the exercise of a constitutional right, and not every pressure or encouragement to waive such a right, is invalid. Specifically, there is no per se rule against encouraging guilty pleas. We have squarely held that a State may encourage a guilty plea by offering substantial benefits in return for the plea. [439 US 218-219.]
The Court further observed that “it is not [constitutionally] forbidden to extend a proper degree of leniency in return for guilty pleas,” id., p 223, and that its prior decisions “unequivocally recognize the constitutional propriety of extending leniency in exchange for a plea of guilty and of not extending leniency to those *520who have not demonstrated those attributes on which leniency is based.” Id., p 224.6
As in Corbitt, defendant asserts that the promise of leniency if the right is waived needlessly encourages the waiver of the right. Corbitt recognizes that defendants are often put to difficult choices because the system offers opportunities to minimize risks by waiving rights. Unless the encouragement unnecessarily burdens the exercise of the right, it is permissible. We conclude that the sentencing practice here is analogous to the accepted practice regarding guilty pleas and is not constitutionally infirm.6 7
In sum, because there is no indication that had defendant opted for a jury trial, he would have faced “retaliatory sentencing,” People v Atkinson, 125 Mich App 516, 518; 336 NW2d 41 (1983), and the practice does not needlessly encourage waiver of the right to a trial by jury, we conclude that the trial court did not coerce defendant’s waiver. The trial court’s statement, three months after trial, of its views and sentencing practices pertaining to the advantages to defendants *521of opting for a bench trial did not render defendant’s otherwise valid waiver involuntary.
n
Defendant next argues that the prosecutor denied him a fair trial when the prosecutor impermissibly shifted the burden of proof during closing argument by stating that the failure of a defense witness to appear at trial was “convenient.”8
Defendant failed to object to the comment at trial. Appellate review of allegedly improper prosecutorial remarks is generally precluded absent an objection at trial because the trial court is otherwise deprived of an opportunity to cure the error. People v Stanaway, 446 Mich 643, 687; 521 NW2d 557 (1994). An exception exists if a curative instruction could not have eliminated the prejudicial effect or where failure to consider the issue would result in a miscarriage of justice. Id.
Upon review of the prosecutor’s remarks in their proper context, we find no error. The prosecutor was merely attacking the weaknesses in defendant’s version of what occurred. It is permissible for a prosecutor to observe that the evidence against the defendant is uncontroverted or undisputed even if the defendant has failed to call corroborating witnesses. People v Fields, 450 Mich 94, 115; 538 NW2d 356 (1995). Further, although a defendant has no burden to produce any evidence, once the defendant advances evidence or a theory, argument with regard to the inferences created does not shift the burden of proof. Id.
*522m
Defendant’s final argument is that there was insufficient evidence presented to sustain the trial court’s verdict. Defendant claims that the evidence was insufficient because defendant was not seen wearing the clothing worn by the robber as described by the complainants, no fingerprints were found on the gun used in the robbery, and defendant was identified only by his voice.
When determining whether sufficient evidence has been presented to sustain a conviction, a court must view the evidence in a light most favorable to the prosecution and determine whether a rational trier of fact could have found that the essential elements of the crime were proved beyond a reasonable doubt. People v Wolfe, 440 Mich 508, 515; 489 NW2d 748 (1992), amended on other grounds 441 Mich 1201 (1992).
Viewing the evidence in a light most favorable to the prosecution, there was sufficient evidence to sustain defendant’s identity as the robber and the trial court’s verdict. Defendant matched the general description given of the robber (tall and slim), defendant was seen on a cold March night without a jacket coming from behind a building where the robber’s jacket, weapon, and Gray’s wallet were thereafter found, and defendant’s voice was immediately identified by Gray and Parker as that of the robber when the police found defendant. Because the building was surrounded by an open field, the jury could infer that if there had been another person fleeing, the person could easily have been seen. Defendant was identified by the complainants in court and in the parking lot where the offense occurred. This evi*523dence, and all reasonable inferences drawn from it, was sufficient to sustain defendant’s convictions of armed robbery, People v Turner, 213 Mich App 558, 569; 540 NW2d 728 (1995), assault with intent to rob while armed, People v Cotton, 191 Mich App 377, 391; 478 NW2d 681 (1991), and felony-firearm, People v Davis, 216 Mich App 47, 53; 549 NW2d 1 (1996).
Affirmed.
Markey, P.J., concurred.Defendant does not argue that the trial court failed to comply with MCR 6.402(B), and the transcript shows that the trial court complied with that rule. Defendant acknowledged to the court that he had signed the form stating that he was voluntarily relinquishing his right to a trial by jury and electing to be tried by the court. The court advised defendant of his constitutional right to a trial by jury and ascertained that defendant knew what a jury trial was and that he wanted the court to hear the case.
Just as the Court did in People v Earegood, 383 Mich 82; 173 NW2d 205 (1970), we take the trial judge at his word.
Defendant waived his right to a trial by jury through a waiver proceeding that was proper on its face. He received a sentence concession for the waiver and presumably does not challenge his sentence as too lenient. He did not exercise his right to a jury trial and so cannot complain that he was penalized for the exercise of that right. To the extent he asserts that the consideration for the waiver was illusory because no definite sentence was discussed, he has not shown that he did not receive a concession and, further, defense counsel made an informed prediction, not a promise, and defendant made a choice on the basis of sound advice, rather than a promise. No more is required. Thus, having waived the right to trial by jury in a proper proceeding, defendant’s only cognizable challenges are that the waiver was coerced because the promise of leniency if the right to a jury trial is waived is the equivalent of punishment for exercising the right, or that the promise of leniency unnecessarily encourages the waiver of the right.
In the cases the dissent relies on, the Court proceeded on the premise that retaliation or punishment for the exercise of a constitutional right was involved.
Also implicated is the practice wherein a jury is waived in the expectation of being convicted of a lesser offense.
In Siers v Ryan, 773 F2d 37, 41-43 (CA 3, 1985), the court rejected a constitutional challenge to the Philadelphia judicial assignment system under which the defendant asserted that he was forced to choose between a guilty plea before a lenient-sentencing waiver judge or a jury trial before a heavy-sentencing jury judge. See id., p 41, n 4. The court concluded that the defendant’s claim “must fail because the law is clear that a state ‘is not forbidden to extend a proper degree of leniency in return for guilty pleas.’ ” Id. p 43, quoting Corbitt, supra. See also United States v Narramore, 36 F3d 845, 847 (CA 9, 1994), and United States v Villasenor-Cesar, 114 F3d 970, 975-976 (CA 9, 1997), involving claims that the application of the federal Sentencing Guidelines penalized the defendants for the exercise of protected constitutional rights.
The dissent, post, p 528, n 3, assumes that guilty pleas always involve negotiated and known outcomes. However, this is not always the case; defendants often plead guilty without a charge concession or an express agreement regarding a particular sentence.
The prosecution stated in closing argument that defendant “claims that he got a — he was with a friend who is conveniently not here.”