Previous comic.

I was sitting on a park bench wondering what the purpose, what the advantage behind spacing out was.

...

And then, just by coincidence, I ended up spacing out for nearly an hour. I sat in a listless fog of experience as the clouds and the air washed passed me, thinking about no thing in particular, but all the while feeling that I had gained from it.

...

Not a single, expressable thought crossed my mind, and I think that goes a long way to answering the reason behind it.
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