https://arxiv.org/pdf/1803.10122 I have a similar question and found this paper source. One thing I am not sure of is if this is no longer the same concept/close enough concept that people currently talk about, nor if this is the origin.
https://www.sciencedirect.com/science/article/pii/S0893608022001150 This paper seems to suggest something at least about multimodal perception with reinforcement learning/agent type of set up.
1. Maybe for everyone it would be different. It might be hard to have a standard formula to find obsessions. Sometimes it may come naturally through life events/observations/experiences. If no such experience exists yet, or one seems to be interested in multiple things, I have received an advice to try different things, and see what you would like (I agree with it). Now that I think about it, it would also be fun to survey people and ask them how they got their passion/do what they do (and to derive some standard formula/common elements if possible)!
2. I think maybe we can approach with ” the best of one’s ability”, and when we reach that, the rest may depend a lot on luck and other things too. Maybe through time, we could get better eventually, or maybe some observations/insights accidentally happened, and we found a breakthrough point, with the right accumulation of previous experience/knowledge.