The insightful teammate is important because they provide a vision and perspective that others on the team lack because they are too myopic. This is not the vision of a vision caster. This is the vision of someone on overwatch, the lookout. They see what is on the horizon and warn the team when they see a problem approaching. They can seem like a naysayer or a worst-case scenario person but when taken seriously, the insightful teammate helps the team avoid unnecessary problems. Teams that lack insight are often reactionary and lack the proactive ability to avoid being victims of circumstance.