One of the most desired card sleights among dabblers is the Diagonal P— Shift (DPS), despite the fact that it is one of the least used card sleights. If this sounds contradictory, it isn’t: popularity is unrelated to functionality. Of course it’s possible that people don’t use the DPS because it’s difficult, but there are many difficult moves that magicians use all the time. The main reason is that the concept behind it is not particularly useful.
The difference between something seen and something reasoned or thought about is obvious. I can show you, say, two apples and three bananas (five fruits in total) or alternatively ask you to think of ‘2a + 3b = 5f’. One is perception (or a mixture of perception and thought) and the other, purely thought. In magic, however, the differences between visual magic and cerebral – tricks seen and those created in the mind – are not immediately clear, mainly because most tricks are a mixture of the two.
We have looked at the multi-dimensional world of routining for the informal performer. In that world there are fewer formulae and fixed ways of looking at routining, because informally one is not doing long routines for captive audiences, but at most linking tricks individually or in pairs for people and groups who may not have asked for or expected a magic show. As mentioned there, we might produce the four Aces and then do a trick with them, but we won’t do a five-minute routine of Ace tricks if we know what’s good for us (and our spectators). To do so would be to end up ‘putting on a show’ and dominating a situation where, probably, all people wanted to see at most were a couple of card tricks as part of the broader social interaction. It’s equivalent to someone asking ‘How are you?’ and then using them for the next half hour as a surrogate therapist.