When assigning a group of people to making a project together, in a team, the team leader should always know everything about their opinions of each other. When 2 people initially dislike each other, they're very likely to start conflicting for any trifling reasons, that can impact the team's productively negatively.

In order to avoid these risks a special device could be created for measuring mutual liking/dislike coefficients, this way predicting conflicts or effective cooperation possibilities.