Jennifer
There are a couple of problems.
1. Architects lacking in slavish devotion to antiquity feel a canine urge to
be designer-y and leave little doggy-presents on the artifacts we work on, or
at least nearby. (We know some things better than those old guys did, like
Mr. Wright's roofs, and other things we just think we know better). We also
have the ability to blame codes for to give us reasons to make some of our
revisions to our Historic Patrimony.
2. It is not possible to fully "square" codes and conservation/restoration.
This is why whoever it was invented the squinch.
3. "Adaptive Reuse" covers a multitude of sins by letting the gentleman (or
gentleperson) architect redesign what he wants to redesign, keep (what he
thinks are) the best bits and pieces and dumping the rest, blame
unfortunate occurrences on the code and economic realities.
This all made more sense before it was written. The guy sells cars. What do
you want?
Ralph