[racket] Plot is voracious

On Thu, May 22, 2014 at 7:17 AM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
>
> On May 21, 2014, at 6:09 PM, Neil Toronto wrote:
>
>> That's the kind of thing I had in mind, but I was also thinking of subtyping-like relations in the exception hierarchy. For example, does it make sense to change a contract to raise a less specific error?
>
> No, absolutely not. The Style Guide recommends to catch the most specific exn-s possible so as not too accidentally mask out others that aren't supposed to be handled.
>

While I generally agree with Matthias here -- backwards compatibility
is important(!), we should be a bit careful because it is possible to
have a too-specific exn hierarchy (we had one that had far too many
exns before the current one and we removed a bunch of specificity with
no ill effects).

Robby