Now as a senior dev, I've seen enough shit to realize that most people have no idea what is going on, and are flying by the seat of their pants.

What's helpful in my industry is that new development happens so frequently that the absolute best answer today is probably the wrong one in the next few years. Since I'm never on the absolute cutting edge, I have to trust my team to pitch the plan and we roll with it.

What I think makes me a senior is me knowing that we don't know anything, but being able to create a plan if/when we have to make changes.