Actually he has explicitly listed it as being necessary to make the language popular in his essay "The Next Big Language" which you can find at http://steve-yeg

Actually he has explicitly listed it as being necessary to make the language popular in his essay "The Next Big Language" which you can find at http://steve-yegge.blogspot.com/2007/02/next-big-language.html http://steve-yegge.blogspot.com/2007/02/next-big-language.ht... "Rule #2" for what NBL requires is "Dynamic typing with optional static types."