I remember seeing Helder Guimaraes live at the castle testing a new effect at the time
In that case I can share two other famous magician’s fails. As well as share my opinion that it’s best not to admit that the trick did not go as planned if at all possible.
Watch how AGT Winner Matt Franco recovers from his failure
David Copperfield Plans for Failure
OPRAH: Are you ever scared, like, for instance--I mean, I know--I mean, every--all of us who are in front of the camera or, you know, work in any business really are--survive and can look good because of all the people who work with us. But, I mean, in the case where the--the fire and the ropes, like if somebody messes up, you're a goner?
COPPERFIELD: Yeah, I mean, human error is a really--you know, you have great precautions, you know. In the case of the car illusion I mentioned, it was the end of the show, so there's no plan B that I could go to. But normally there's a plan B and plan C and everybody is really trained to--to move in other directions, so you'll--hopefully you'll [never] know when something goes wrong.
OPRAH: So when that car fell from the levitation, what did you do?
COPPERFIELD: I looked real stupid