Post Made Community Wiki by user8
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I've read somewhere than you should not travel more than 6 together if you need to agree on where you are to go and what to do, as you will not reach consensus.

This is a prime example of why there needs to be a person with decisive powers. In this particular example, said person needs to make a decision and say "it needs to be like this", and the others need to respect that decision so real work can be done.

If the decision then proves to be bad later, you at least knows for sure, and can learn from it.