Along the lines of Techno's time travel post earlier
Have any of you ever heard of the Berenstein Bear problem? I stumbled upon this several months ago and I have to say - it kind of blew my mind at first: [Post edited by MP4VT2004 at 02/15/2018 4:53PM]
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Link: Click here
Posted: 02/15/2018 at 4:50PM