, 01001001 wrote

Half the people ... were obviously not developers. ... were full of people who never wrote a line of Java or Python code.

, JoshRoss wrote

... suggest to the organizers that they implement one or more tests, in which the attendees would have to achieve a level of competency prior to being awarded the option of purchasing tickets.

I think anyone who thinks that writing a line of Java or Python code is the definition of a developer probably wouldn't pass that test.