Val's videos spread this idea that because I'm a magician I should know how everything works. That being a magician gives you the right to know all the secrets in magic. This is just not true.
This line inspired me to offer some perspective;
Val "exposed" the Levitation by having a Fork Lift behind the curtain. . . my buddy Dean Hankey knew of this and deliberately had a full sized image of a Fork Lift made up on foamcore. . . when he needed the hoop the curtain paged open and revealed this image. Dean offered his classic goofy look and then knocked it down, leaving the girl floating. . . he deliberately used Val's explanation to his advantage. But there's more to what he did; he proved that there's more than one way to create said effect. But let's take this a few steps further; someone says that they want an Aga Levitation. . . what does that really mean?
The Primary version of the Aga is a larger and quite heavy piece of machinery sat behind the curtain. I've used several different versions of this lifting system over the years, one of which raised the girl 18', which isn't just impressive to the public but dangerous as hell if you don't set all the safeties the unit demands . . . I've seen idiots try to avoid those safeties and had everything fall forward, into the orchestra pit and the poor girl ending up in the hospital. . . but that's just a side note.
There is a little known variation to the Aga that is mounted beneath the stage; chances are you've seen it used but didn't realize it. The late Barclay Shaw exploited this method for the old "Beyond Belief" show and left magician's completely dumbfounded for years . . . which takes us back to the fact that even highly educated performers don't know it all and similarly, even those familiar with multiple methods can be thrown for a loop if and when you stage things in a way that goes outside the standard mold.
The Asrah Levitation is another awesome example; I've personally owned and worked with over a half-dozen different type of forms as well as alternative methods for ditching the girl. . . including outside with her literally laying down in the dirt. But staging is everything; my mentor gained fame for being the first to combine the Aga with an Asrah back in the 1960s . . . covering the suspended young lady as she floated some 4 feet or so off the floor. . .
The Sawing in Half is again, a famous effect with numerous variations and I'm not just talking about the evolutionary changes such as moving from the big boxes of Thurston fame to the Thin Model design introduced by John Daniel (anyone know who the first girl was to work in that cabinet?). There are several variations as to how that streamlined classic works, including one method that I'm aware of, that had real feet on the second section vs. the "exposed" dummy feet . . . and on that note, the only remote controlled set-up on the feet that I've seen over the years are the one's Val demonstrated on the show. If they exist, I've not seen a single performer that actually uses them.
This handful of illustrations hopefully reveals just how complicated it can get when learning magic and magic secrets; there's always something else!
My knowledge on grand illusions ends with the mid and late 1990s, there's a ton of stuff that's come out since that I simply know nothing of because I'd gotten out of that side of the biz. What I do know however, isn't so much due to my ties with Kirkham and said collection, but the fact that I have a peculiar habit that was started by my father; anything I choose to do I will research and study until I know it exceptionally well. Because of this single habit I have a wide range of understanding of key bits featured in my shows. This is still true when it comes to Mentalism and Bizarre Magick. But then, this is also why I tend to be "hard" on others when it comes to learning the trade; there's so much more to it. ;-)