And more importantly, how do you tell in the limited time window the patent examiner has ([1] claims it's as low as 19 hours.)
edit: [2] has a more in-depth look at the problem
[1] https://www.oecd.org/site/stipatents/5_4_Frakes_Wasserman.pd... - "on average, an examiner spends only nineteen hours reviewing an application, including reading the patent application, searching for prior art, comparing the prior art with the patent application, writing a rejection, responding to the patent applicant’s arguments, and often conducting an interview with the applicant’s attorney"