in reply to
Re^4: [OT] Perl / Computer Science Science Fair Projects
in thread [OT] Perl / Computer Science Science Fair Projects
It is certainly similar, and was done for a similar reason.
However the Perl version had better cause to do it (there is popular code in the wild which conflicts with Perl 5.10 features, whereas worries about functions named "let" are more theoretical), and did it with a language mechanism that is used by a lot of third party modules.