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Fig. 3-13. What do you think may have been
the purpose of these pots? Although these
hand-built vessels were made using the coil
technique, forms such as these can also be
constructed using the pinch technique shown
on page 49

The period that marks the paleolithic era is between the 250,000 to 10,000 years.

Photography has changed its subject matter quite a lot over the past few years. in the 1800's, it was considered normal for families to have  post mortem photos of their loved ones, and now that would be completely unacceptable. i think that photographers have always pushed boundaries and have been eager to capture everything, it is just society that changes their boundaries.