Okay so some fella on another forum was looking for advice on how to do an effect and he set a variety of "conditions" that the effect needed to meet. One of them was borrowed pack of cards. It struck me as odd because the obvious, and most simple solution to his problem was a card index. A card index can be used with a borrowed deck provided you live in an area in which you are reasonably sure what kind of deck someone is likely to have, but it certainly isn't fool proof. The problem is that to truly do his effect without an index was leading him in an incredibly complex, sleight heavy, direction that included stacking on the fly and real time marking of a borrowed deck. All that because he wanted to do the effect with a "borrowed" deck!
So my question arises because I just don't think "borrowed deck" is something we need to overly concern ourselves with. Sure, it is nice to have the ability to perform magic with a borrowed deck but how often does this actually happen? And if it ever comes up I have a huge selection of effects I could do with one. Do we really have need to ensure that every effect we do is with a borrowed deck, especially if the "borrowed deck" version of an effect is 10 times as complicated as using a stack, index, or gaffed deck?
So my question arises because I just don't think "borrowed deck" is something we need to overly concern ourselves with. Sure, it is nice to have the ability to perform magic with a borrowed deck but how often does this actually happen? And if it ever comes up I have a huge selection of effects I could do with one. Do we really have need to ensure that every effect we do is with a borrowed deck, especially if the "borrowed deck" version of an effect is 10 times as complicated as using a stack, index, or gaffed deck?