My experiences would tend to agree with you; I worked at The MathWorks (makers of MATLAB) for a while, and I was a little surprised when I noticed that the hard

My experiences would tend to agree with you; I worked at The MathWorks (makers of MATLAB) for a while, and I was a little surprised when I noticed that the hard-core devs who developed the guts of the language (parsers, JIT, data structures, math libs) worked purely in C++ often using EMACS or VI, and only rarely would launch a dev MATLAB GUI. I suppose it makes sense that if you're working deep in the internals, all that matters is properly handling all the possible inputs that your function can receive and not really how those inputs get there - that's the job of other teams further up the call chain :) I still found it an interesting lesson.