Breaking backwards compatiblity

[Walter Bright]

On 3/10/2012 1:20 PM, H. S. Teoh wrote:
> It's no fun at all if you had to wait 2 hours just to
> find out you screwed up some parameters in your test render. Imagine if
> you had to wait 2 hours to know the result of every 1 line code change.

2 hours? Man, you got good service. When I submitted my punched card decks, I'd 
be lucky to get a result the next day!

(Yes, I did learn to program using punch cards. And to be fair, the programs 
were trivial compared with the behemoths we write today.)