What Went Wrong?

The complexity of wrong things far exceeds that of things intended.

References for some of the subsequent points:

The {\mfsl META}{\mfsl FONT\/}book, chapter 5, `Running ', contains instructive examples, and supposedly `dangerous', but actually basic and useful, notes.

In that chapter, and in chapter 27, `Recovery from Errors', KNUTH discusses the diagnosis of 's error messages. I find this perhaps the hardest part of the book — if not of using .

Incidentally, 's error messages are contained in an ASCII file called `mf.pool'. Reading the pool file can be entertaining.



Subsections