Obviously some slight disagreement in the terms here.
My understanding is that set is the permanent fixed bend which all bows (and even steel springs) will suffer from.
The extra bit which is there after a days shooting, but recovers fairly quickly is string follow.... (or is it the other way round
)
Anyhow... like Jawge says "set happens" .
An if I have a choice between set and a broken bow... I'll go for a bit of set every time!
If you think about the actual words ... "Set" implies permanent... like when cement sets...
Del