[watwut]

Why would you be bothered by him doing whatever with his own finances? It does not sound like he was harming himself much by trying to save those 100?

[fakedang]

We don't know what the 100 was for. If it was for a networking opportunity (dinner out, some white shoe party, etc), it was a poor decision. If it was for a bunch of Hermes ties that look no different from a Thomas Pink, than that was a good decision.

[wolfgke]

Opportunity cost.

Here, two cartoons of SMBC on this concept:

https://www.smbc-comics.com/comic/2012-12-29

https://www.smbc-comics.com/comic/2014-04-20