This one is the same as above.  I think it's just an issue of the economics-fixes branch being a little older than the precalc-fixes branch.  I agree with you... at some point, this needs to change in precalc to #utils>#pb>.after(avoid).  I think this was me experimenting with some fixes...but this one and the one above aren't actually a part of the work for economics-fixes branch.  I made sure to just work in economics in order to reduce change of regression for our refactored books.