If this was a science it would progress beyond the few blobs he made in the 1930s, but it seems to be quackery, trading on the mythology of a dead guru and not a science.
Are you seriously telling me that they can't make an infinite set of ambiguous blobs representing things, and that set of things never changes since the 1930s???
If I said that ink blot on the Wikipedia page, looks like the 'Y' in Yahoo, how would you interpret that using a 1930s book that was written before Yahoo, before TVs, before computers, before Jetplanes?
The second from last looks like Emu from Rod Hull and Emu, does that have a cultural reference in his book from the 1930s? No?
The 'bat' one, you understand that bats are very rare now, and animal skins have been replaced by synthetics???? Almost nobody will ever see an animal skin in their life now, yet they are still using the normal response to one of the blobs as an animal skin?????
What about countries where bats don't exist? Is there one set of blobs for all cultural references? Eskimos are expected to see 'bats'? Athiests are expected to see angels?
I call quackery on this. This is a cult of people who believe in guru Rorschach, and the blobs should be exposed, because there appears to be pseudo science behind them.