What type of person are you? Do just do it? Do you take a bit of time research it to see if it's a good fit? Or are that person with regrets?
Sorry to be boring but it depends on the situation .. it's almost an unconscious risk assessment strategy ... What's the worst that can go wrong and how likely is that to occur versus what are the rewards? .. some situations you can polite straight into but others ... Best to have a think before committing
I tried to read and understand your question, but I am unable to do that.