Lots of interesting stuff including Ryan discussing OS/2 at length. This portion is especially compelling:
I find if you’re targeting Windows, Linux, and Mac OS X right from the start, your code will probably work anywhere else that you might try it later.
Not to long ago, people would say, “why bother? Everyone runs Windows!”
But then the consoles became important.
And smaller shops might still say, “well, I’m not targeting those anyhow!”
But now they wish they had an iPad port.
You never know what will be important tomorrow!
The English version of the interview is unfortunately lacking this great picture so I have provided it for reference.