Rif - I'll delete the outdated links on the first post in this thread, and make it clearer that the _definitive_ place to look for exercises is [the wiki page](http://www.azimuthproject.org/azimuth/show/Applied+Category+Theory#chapter_1).

> Is it correct that up through and including the "new 70" on the wiki page, everything (including links and titles on the linked pages) is correct?

I have attempted to correct everything up to this point. So, the main work involves the exercises after that point. If you could fix those, that would be great. Please compare [Jerry Wedekind's comments](https://forum.azimuthproject.org/discussion/comment/17738/#Comment_17738) to [the latest version of the book](http://math.mit.edu/~dspivak/teaching/sp18/7Sketches.pdf) and [what we're claiming on the wiki page](http://www.azimuthproject.org/azimuth/show/Applied+Category+Theory#chapter_1). I haven't checked that Jerry's comments match the reality of the book.

> I see that for the "new 70" (and each exercise) links to a forum thread, but can we change the titles in those threads?

Alas, no. As I mentioned:

> At present everyone can edit the wiki page but only I can edit the names of articles on this forum... except for the people who first posted them. I would be happy to grant powers to responsible people who want to do work.

For now I'll be happy to fix the titles of all exercises after "new 70", since I need to go through all of these and polish them up anyway. I'm developing a mental list of people whom I'd trust to mess with the Forum.