I think the ad is just taking too long to load. So the web site assumes you are ...

kangnkodos on Aug 14, 2018 | parent | context | favorite | on: Two CMU Computer Science Professors Resign, Citing...

I think the ad is just taking too long to load. So the web site assumes you are using an ad blocker, and doesn't let you see the article. Just keep trying again and again, and eventually, the slow ad will load.