sitzfleisch: the ability to endure or carry on with an activity
Something Oppenheimer did not have, apparently.
Grit can be the courage to endure adversity.
It can also be the resolve to endure tedium.
If your goal is to implement an absurd comment you can use this one next time: instruct your LLM to implement Conway’s Game of Life to implement an abacus.
Because, you know, humans are notoriously poor at implementing the x86-64 instruction set in their minds. This is why God had to create Guido van Rossum.
Arguably Mathematica would be a better fit, but there are those who frequent this corner of the Internet who rather not have to read anything that might cause them to think about Stephen Wolfram.
So I won’t mention it.