In context to Project Managment, generate a short original definition for groupthink with the following information without the reference to Janis in 1982 or bay of pigs: Groupthink: Janis (1982) first identified groupthink as a factor that influenced the misguided 1961 Bay of Pigs invasion of Cuba. His term refers to the tendency of members in highly cohesive groups to lose their critical evaluative capabilities. This malady appears when pressures for conformity are combined with an illusion of invincibility to suspend critical discussion of decisions. As a result, decisions are made quickly with little consideration of alternatives; often the practice leads to fiascoes that, after the fact, appear totally improbable (Pg 420)