Thanks, these emails explain things fairly clearly. It's worth noting that as more functions get added to racket, it becomes more likely to trip across this.� In particular, we hit this only because range was added between 5.2 and 5.3. --Dan <div class="gmail_quote">On Tue, Oct 23, 2012 at 2:12 PM, Asumu Takikawa <<a href="mailto:asumu@ccs.neu.edu" target="_blank">asumu@ccs.neu.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> On 2012-10-23 08:48:35 -0700, Dan Grossman wrote: > � �Thanks, David.* I would be interested in someone walking through how this <div class="im">> � �behavior arises -- as well as the design issue regarding the "hopeless > � �top-level" </div>A few months ago, I collected all of the instances of "the top-level is hopeless" that I could find from the archives and collected them here: � <a href="https://gist.github.com/3083053" target="_blank">https://gist.github.com/3083053</a> I think this e-mail in particular is relevant: � <a href="http://lists.racket-lang.org/users/archive/2008-September/027474.html" target="_blank">http://lists.racket-lang.org/users/archive/2008-September/027474.html</a> Cheers, Asumu </blockquote></div>