Phony argument. An electronic thermometer and blood pressure monitor ensure safety too and they never need a license. Do x-ray machines need a license? This ulrasound device by definition doesn't even emit radiation. This company is conning its users.
> In one creepy experiment, the scientists implanted electrodes in a mother rabbit’s brain, took her young litter off to a submarine and, when it was deep below the surface, killed them one by one. At each synchronised time of death, the mother’s brain reacted.
Python 3.6+ does have type annotations and multiple static analysis tools for type checking. Only an ignorant or biased person would yell at Python for flaws it doesn't have. For crucial business logic, one also writes unit tests.
If the db internally supports efficient temporal tracking, then yes by all means. If it doesn't, then I don't see a way for the developer around the redundancy.