There have been a number of studies in the past showing LISP or other VHLL&#x27;s outperform C-like 3GL&#x27;s in productivity or defect ratios. There&#x27;s been some consistency in results regardless of the methods. The consistency on those is more that C sucks than that LISP is great. ;) Java seemed to suck too except not as bad as C.<p>I&#x27;d like to see a batteries-included LISP with dev environment put against Python, Ruby, etc by people with similar skill level in respective mindsets on same types of apps. Quite a lot of people. That would tell me more. Of course it will outperform C, C++, and Java in productivity: it&#x27;s a safe-ish, malleable, dynamic language with macros. LISP beating scripting languages would speak volumes given it also compiles to efficient native code, was used in OS&#x27;s, and can use dedicated CPU&#x27;s.