One of the demos was printing a thing out, but the processor was hopelessly too slow to perform the actual print job. So they hand unrolled all the code to get it down from something like a 30 minute print job to a 30 second print job.
I think at this point it should be expected that every publicly facing demo (and most internal ones) are staged.
I think at this point it should be expected that every publicly facing demo (and most internal ones) are staged.