"abstraction" is often used to focus on a general case and ignore a specific instance of a problem. given this meaning of the word, how are functions with parameters an example of abstraction?

they pull objects closer together like a magnet

Explanation:

Hi! Well, I am not sure your question is complete enough or even in the right subject but, assuming it is, I would say that functions with parameters are an example of abstraction because they are limits for what we consider normal, so everything that happens between those parameters, without any specifications, are considered in a certain way.

Explanation:

This discussion even can get a little abstract if we don't put a clear example. So, let's do that. I would say that functions with parameters are an example of abstraction because it is a general concept where things develop. For example, we can say that we -humans-, at least in America, are free, but we are free to do certain things that don't hurt others and/or ourselves. So, the truth is we are free inside determined limits, between certain parameters. As long as we stay inside those parameters, we can do whatever we want, but if we go beyond those parameters, our behavior will be considered wrong by society. We can say that the "good" is an abstract concept, because it is a general concept that tries to describe the accepted behavior, but is not really listing any in particular. All the functions we develop inside those parametres are ok for the rest of us. That is why I think functions with parameters are an example of abstraction because they are limits for what we consider normal.