[pattern]

What percentage of 20-30 year old males do you believe have played Portal (2), saw this posting, had the inclination to download the mod, and the inquisitiveness and persistance to actually complete the puzzle/test?

Rarely is a filter perfect, but this is likely a lot better than taking a random sample from the population :)

[Homunculiheaded]

I think what the parent is pointing out that P(male, 20-30 | played through the level) is higher than the existing P(male, 20-30 | applied for job)