The other question to ask yourself is if you want the dependency as a visible external thing, or do you want it cut & pasted into your code? Just saying that "

The other question to ask yourself is if you want the dependency as a visible external thing, or do you want it cut & pasted into your code? Just saying that "Dependencies are bad" means people are more likely to cut and paste that algorithm or bit of code into your application rather than taking it from some sort of package. In this sense you also do not know that it is a dependency, and you do not get any updates or bug fixes for it either. Have to be careful about those unintended consequences there.