Brian
when I write I save EVERY version so I can go back to it. Sometimes - many times - the first stream of thought is the best one.
Which is why I think your first paragraph is is so important to keep.

Sometimes I just sit here and write things that seem unconnected to anything I'm working at, but I save it, just incase it comes in handy sometime.

It's a great medium writing, I enjoy the process of being able to pause and think about what I actually mean and want to say without the pressure of having to be quick, as you do in a conversation.

dave

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Go confidently in the direction of your dreams! Live the life you've imagined. As you simplify your life, the laws of the universe will be simpler.
Henry David Thoreau