To be fair, the two C questions are trivial to anyone who has done anything worthwhile in C. The Scheme question was a bit trickier for me, since Scheme syntax is slightly different from Common Lisp, but again, nothing an average Lisper would find too challenging.
On a related note, it's getting quite predictable:
- Joel writes something controversial
- His acolytes jump in and express their concurrence enthusiastically
- A few nay-sayers pipe in with their objections and
- A legion of geeks go to bed that night, satisfied that they have done their bit to uphold their geek cred