We know that Hogwarts changes itself and has a mind of its own. We also know that Eliezer had pointed out to him in a completely distinct context that doorknobs were not invented until the second half of the 19th century. (In this thread.) In chapter 71, Eliezer explicitly mentions a door in Hogwarts having a knob. Am I overthinking or has he just given us evidence that Hogwarts is smart enough to adopt new technologies to itself?

This may not be the case since the Wizarding world does on a rare occasion adopt Muggle technology (such as the use of armor by medieval wizards). But either way it suggests that either a) wizards adopted a very late technology or b) Hogwarts has a lot of flexibility in how it behaves and can even upgrade itself. So we either have a useful sociological data point or we have a data point about what Hogwarts is capable of doing.