Well...the reason is APL can't do scientific computing well. It doesn't by default have scientific libraries and builtins for solving equations. It has a fast

Well...the reason is APL can't do scientific computing well. It doesn't by default have scientific libraries and builtins for solving equations. It has a fast interpreter, but scientific computing often needs much faster. It was also late getting off the mainframe. I really like APL, but it doesn't have the horsepower for my needs.