I am all about going wherever the evidence takes you. And I am willing to believe that our measurement tools are as flawed as were celestial maps based on the Ptolemaic world view.
But created 50,000 years ago? No
**** way. Too much evidence is in place for an earlier start, including written and fossil records. The mDNA work is pretty compelling too, up to a point.
No matter how we got here, I don't believe
homo could have dispersed and left the variability in the fossil record, all aroun d the globe, in such a short time frame.
http://anthro.palomar.edu/homo2/mod_homo_4.htm