Before even entering the room I know if there's a Chad in there

[gylo]

Based on how loudly the women are laughing.

I've used this rule as a predictive measure and it's never let me down. Amazing how predictably women act in the vicinity of an Alpha Male (tm)

 

[BKFL]

The concentration of foids can be enough sometimes.

 

[gylo]

The concentration of foids can be enough sometimes.

Chad's attract women, and make those already there laugh harder, longer

Thus a reliable metric is total average female laughing volume over time., or the integral of loudness.