Trust is the willingness to give the other person the benefit of the doubt.
"I don't understand the insight you see, but I trust you to do the right thing even if I don't understand it."
Trust is what lets teams navigate ambiguity together, without every little blip grinding to a halt as everyone insists everyone else explain to them in excruciating detail what they want to do and why it's correct.
Trust is fundamentally required in ambiguous situations, or in teams with a diversity of skillsets, experiences, and personalities.
But a high trust team with a diverse set of abilities is the only way to navigate a complex environment and do something great.