Dimensionality reduction isn't reversible function. Video and one channel of audio is at least 10 dimensions, arguably IQ is more, you are going to project that

Dimensionality reduction isn't reversible function. Video and one channel of audio is at least 10 dimensions, arguably IQ is more, you are going to project that to a single scalar? The sample size, the experimental design and control are all out of whack in these papers, I was trying to PCA Taleb's argument. I don't think you are measuring what you think you are measuring.