Archaeologists have uncovered a stone slab with what appears to be the earliest correspondence ever.  The hypothesis is that the slab was exchanged with each new entry.  Here is a transcript.

Not the slab, but stone like it.

Hi

Why do you give me this?

No reason.  Just Hi.

What you want?

Nothing, just friend.  What wrong with that?

Here a small circle has been carved, with a curved line in the lower half, and two dots in the upper.

What this shit?

It’s like face, smiling.

OK, haha.

BTW, I have plenty hides, for you, cheap.

Here are just random chips, odd symbols, in a pattern suggesting anger.  There appears to be the figure of a man, decapitated.  The rest of the slab is blank.

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Photo credit: http://www.newsgd.com/travel/routeofthemonth/200606080058_60340.jpg