[tomrod]

T-types are defined as those that increase a team's agility. Saying the definition each time would be cumbersome,so we package the connotation up into an idiom and move on.

Generalizations can make for identification of useful patterns. Sometimes, the identification is pareidolia. Sometimes, it works. Tools of science and philosophy help us move that along.

https://en.wikipedia.org/wiki/Pareidolia

[zamadatix]

> T-types are defined as those that increase a team's agility.

That's not how they are defined in the article or the detailed definition it links to. The definitions there define traits of someone who may be able to increase the agility of a team depending on the team and what it is doing but the same could be said for most types of people yet not all are T-shaped and vice versa.

[airstrike]

> T-types are defined as those that increase a team's agility.

…according to some model of the work which may be entirely inaccurate, I think is the point the parent is making.