@professionalbronco mods it has now been another 2-3 months. could you please respond??

@v4913 I understand now. Thank you very much!

@divinedolphin
Yeah Prof Loh explained in the vid I think.
Also when I was doing the four 4's problem (arrange four 4's and add operations or "smush" - Prof Loh word - them together to get any number from 1-50) I started using !! like mad - around 3/4 of the time (and I was the only person in the class using it frequently)