I posted this over on UKW in a response to the discussion on Steve Maskery's workshop build thread so I thought I ought to share with you all here as well. But I doubt that Mike G or Tim the Reclaimer would make the same mistake either
The outward opening doors on my barn

The bolt that keeps them fixed open

View from inside the barn that shows what happens if the bolt is not properly turned and held in place in the "up" position

You will notice the bolt on the right is held in place but the one on the left has slipped down over the door jam/weather seal rendering the door unopenable from the outside.
The solution, 4 rows of shiplap are now screwed in place

You can imagine the problem when this first happened (yes it has happened more than once) when all of my more useful tools were inside the workshop which is itself inside the barn
The outward opening doors on my barn

The bolt that keeps them fixed open

View from inside the barn that shows what happens if the bolt is not properly turned and held in place in the "up" position

You will notice the bolt on the right is held in place but the one on the left has slipped down over the door jam/weather seal rendering the door unopenable from the outside.
The solution, 4 rows of shiplap are now screwed in place

You can imagine the problem when this first happened (yes it has happened more than once) when all of my more useful tools were inside the workshop which is itself inside the barn