Peer Review
Explanation
The Joke
The comic reveals what peer review actually looks like behind the scenes: overworked academics doing it for free, spending five minutes skimming a paper they barely understand, writing vague criticisms to seem thorough, and either rubber-stamping acceptance or rejecting based on personal grudges. The system is presented as held together by social norms and inertia rather than any actual quality control mechanism.
The Humor
Peer review is widely considered the gold standard of scientific credibility. The comic's humor comes from the gap between the public perception (rigorous vetting by experts) and the reality (volunteer labor by exhausted academics with conflicts of interest). The joke is that the system "works" only in the sense that nobody has proposed anything better.
Context
Peer review has been increasingly criticized by scientists themselves. Problems include: reviewers are unpaid, reviews are often superficial, the process is slow, there's no accountability for bad reviews, and it doesn't reliably catch fraud or errors. Multiple high-profile cases of fabricated data passing peer review have undermined confidence in the system.