And finally, a word to investors. AI investors need to be careful when considering handing their money to a new startup which has "AI" in its title. Recently "blockchain" has become a buzzword. A company can change its name by including "blockchain" in it, and investors are ready to put in it their money even if the actual business run by the company has nothing to do with using a blockchain technology (but may "explore an opportunity to use it", like "Long Island Iced Tea").
BTW: to my best knowledge, so far, no large company or a small startup takes on the challenge of developing AI which would be able to win a Physics Olympiad (theoretical part).
This just demonstrates how far AI yet from actual intelligence (although, such AI can be developed).