<span style="color:red;">1-They lived between 20,000 and 15,000 BC.</span><br/><span style="color:red;"></span><br/><br/><span style="color:#000000;">Can't this mean both: </span><br/><span style="color:red;"></span><br/><span style="color:#000000;">a-They lived from 20,000 BC. to 15,000 BC. </span><br/><span style="color:red;"></span><br/><span style="color:#000000;">and: </span><br/><span style="color:red;"></span><br/><span style="color:#000000;">b-They lived at a period in between the two dates (the period being much shorter than 5,000 years)</span><br/><span style="color:red;"></span><br/><br/><span style="color:red;"></span><br/><br/><span style="color:red;"></span><br/><span style="color:#000000;">Gratefully,</span><br/><span style="color:red;"></span><br/><span style="color:#000000;">Navi.</span><br/><span style="color:red;"></span><br/><br/><span style="color:red;"></span>