Have you ever had to learn something that you never expected you'd need?

EllaNella
I currently have to learn coding in Python for my mandatory bioinformatics course. I don't really enjoy "office work" i. e. sitting at a desk all day and staring at a screen but it is a very useful skill to have so i'm happy to get some insight.

I do prefer practical work in the lab though.
Have you ever had to learn something that you never expected you'd need?
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