If I may provide what I believe is a different interpretation of what she is saying. Yes, sometimes there are really solid libraries that solve the problem you

If I may provide what I believe is a different interpretation of what she is saying. Yes, sometimes there are really solid libraries that solve the problem you are facing well, but often engineers will reach for a Swiss army knife when all they need is a screwdriver. It has a screw driver on it, but because there is so much else there (trying to be all things for all people) the screwdriver isn't even that good. Moreover, solving a problem quickly is not the same as solving a problem forever, and we are responsible for every instruction we import, at some level. If the problem is small (see left-pad, etc.) the smaller total cost of ownership is often to write the specific implementation you need, if you are capable.