> What would it even look like for the top-most function to have to know “everything” that all the child functions end up ever needing? For every function parameter change in the entire program to somehow force a change all the way up the entire call stack? Clearly this does not happen. It so thoroughly does not happen that you may be having difficulty even imagining what it is I am talking about.
Really? In my experience, it certainly does happen and I'm generally happy (but not thrilled) when it does. It means the type system is doing its job, forcing me to provide all the dependencies that a function needs. If 38 layers deep something now needs a connection string that it didn't have before, that had better bubble up to the top-most function. Unless of course the top-most function has already provided it to an intermediate layer which can break the chain, but that is very different than the context.Background() example.
Really? In my experience, it certainly does happen and I'm generally happy (but not thrilled) when it does. It means the type system is doing its job, forcing me to provide all the dependencies that a function needs. If 38 layers deep something now needs a connection string that it didn't have before, that had better bubble up to the top-most function. Unless of course the top-most function has already provided it to an intermediate layer which can break the chain, but that is very different than the context.Background() example.