I think the post was referring to individual projects, not group dynamics, but your point is certainly true of group situations. Sometimes aspects of the group harm the group's ability to reason or behave rationally.
I'd argue that even in a one person project, information becomes available gradually and one must learn to re-consider old conclusions again in light of new information, even to re-consider old questions that might have been easily dismissed earlier.
Human rationality is biased by our use of the heuristics that take a few milliseconds of brain time and work pretty well, but have failures when trusted too much when we have the luxury of more time to consider the information. Even things like a member of the group asserting something confidently can throw off the rational faculties a bit.
I'd argue that even in a one person project, information becomes available gradually and one must learn to re-consider old conclusions again in light of new information, even to re-consider old questions that might have been easily dismissed earlier.
Human rationality is biased by our use of the heuristics that take a few milliseconds of brain time and work pretty well, but have failures when trusted too much when we have the luxury of more time to consider the information. Even things like a member of the group asserting something confidently can throw off the rational faculties a bit.