> Many of the people who came up with or promoted the idea of dynamically typed languages had decades of experience working with punchcards, assembly code and s

> Many of the people who came up with or promoted the idea of dynamically typed languages had decades of experience working with punchcards, assembly code and statically typed languages The problem IMO is that the languages used at that time mostly had ad hoc, poorly specified, unsound type systems. I find that more "modern" type systems are helpful rather than burdensome, but the theoretical foundation for them didn't really exist until the 70s.