Are CAPTCHAs Getting More Difficult?

CAPTCHAs are a challenge-response test used to help decipher human responses from that of a computer in order to prevent automated software from performing actions which degrade the quality of service.  Recently I’ve noticed that CAPTCHAs are getting increasingly difficult.  Is this a sign of tech evolving faster than the human mind?

Related

I read recent coverage of comments from Carnegie Mellon University

I’ve got a few big audacious goals I’m trying (and

What apps are downloaded (or conversely not downloaded) tell us