[austinjp]

Indeed. Also known as "sunk cost fallacy".

[IshKebab]

I think it's a little different from that actually. That's normally about the merits of ongoing financial investment, but I get your analogy and there should be a name for it because you see it all the time from compsci types.

How about "sunk knowledge fallacy" or something like that?

[cies]

> "sunk cost fallacy"

I like to spot those, did not see this one though, but indeed, sunk cost fallacy it is. Well spotted :)