Y'know sometimes, when I'm looking at trees, it makes me think slightly deep thoughts, like:

Sometimes it seems like a paradox how different and, at the same time, exactly similar, many things are. How we see a pattern, yet the individual elements in that pattern each seem unique. So is it a true pattern? I know humans look for patterns, why do we have that facility? Maybe that's not so deep for you.

We recognise a birch leaf. Look closer. See this one is longer, this slightly bigger than that....
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