[plt-scheme] [OT] grateful for PLT Check Syntax

A colleague running experiments in Mathematica recently found that  
some of his extraordinarily good results were due to a misspelled  
variable.

datalengh = Length[data];

Later in the code, datalength was not misspelled, but it had no  
value.  The program was happy when it should not have been, and it  
produced happy pill results.  I listened to the story and thought,  
"This could not have happened with DrScheme."

Geoff