[BroJoeK]

Elsie to Elsie: "As the philosopher David Hume argued, the predictive powers of induction are never actually based on simple observations. "

Now here, finally, is an appropriate place to ask HLPhat's question on practicality -- other than philosophical inquiry, what practical purpose is served by such observations?

[HLPhat]

>>what practical purpose is served by such observations?

You mean like being able to form a practical world-view, rooted in reality, where children are not amenable to being lured into the psychotic delusion that they can choose their gender.

Something practical like that?

XX + XX = FAIL

XY + XY = FAIL

XX + XY = Human