Basically if you study entrepreneurs, there is a misnomer: People think that entrepreneurs take risk, and they get rewarded because they take risk. In reality entrepreneurs do everything they can to minimize risk. They are not interested in taking risk. They want free lunches and they go after free lunches.
The essence of a good investment manager is one who studies a given business and extrapolates the future cash flows that the business is likely to generate over the next several years. Based on the cash flow and asset assessment, they can then arrive at their expected rate of return if they bought a fraction of that business at a given price.
Talking to people is beneficial if you can identify the right people to share ideas and discuss decisions because everyone has blind spots, and others can sometimes catch yours. I think an investment team is a bad idea, but it is a good idea to talk to trustworthy individuals who do not have biases or interests.