Because otherwise someone will say that they invented a new algorithm for ML based on their ML effort at work but it was really solved at home on their personal

Because otherwise someone will say that they invented a new algorithm for ML based on their ML effort at work but it was really solved at home on their personal computer. What happens if you come up with an idea while walking back from the bathroom to your home office related to your day job during business hours? Is that during work or outside of work? I think it is ridiculous to claim things unrelated to your active job assignments. Making a board game as a hobby is unrelated and non-competing to deriving a new ML solver.