Fair question. I would say depends. Is your goal to be able to understand confidently the innards of some complex tool? Do you think you might need to build a

Fair question. I would say depends. Is your goal to be able to understand confidently the innards of some complex tool? Do you think you might need to build a new tool being completely confident on how it works and all its downsides? On the other hand you dont need it for most jobs. You can build a successful career without it. But at least you need to know what they are all about.