This is kind of a test, since I don't know what kind of expertise exists with you my faithful reader, but I need some advice, or rather, I need some advice for my Dad. He's 55+ and looking at getting back into the workforce and one option that has piqued his interest is web development. The question is this: What should he use as his web platform and why? Options that I've looked into are: Ruby on Rails on Mac OS or Linux WebObjects on Mac OS ASP.NET on Windows PHP on Mac OS or Linux Witango on Mac OS or Windows Note: I'm sure I've missed some others, but I think these are the big players. Keep in mind that he's used the Mac OS all his life as the basis for several of the businesses he's started over the years, so he'd like to stay developing on the Mac if at all possible. But it's not the end of the world if he's got to switch platforms. This has got to be a question others have asked, so if there's some web page that answers this directly, I'm sorry I haven't found it yet, but please leave the URL in the comments. Am I the only one that finds making a rational comparison in web development platforms difficult?