So in the enormity which is the 'outside' you're a fly and you find the most small crack to fly through, or it might be an open door but still that isnt very much space compared to the whole of the outside and yet you're flying around inside a small room, you're hitting every single pane of glass EXCEPT the bit of glass that would have been there if it was shut. You cant feel or detect the open air through the window or door that you can get out of
And, poor butterfly, you have also missed your exit chances and now the cat has got you. RIP