There is one speaker who Talks about refractorating, sorry I forgot his name, who always leads with this: [if we changed this constant the function could also d

There is one speaker who Talks about refractorating, sorry I forgot his name, who always leads with this: [if we changed this constant the function could also do this and we can save a lot of code.] "And what do we call a constant that changes? A variable!" And than he uses it as a parameter. Reminded me of him.