Note that different people have different research approaches. The two old ladies check that none of them can see herself and the problem is solved! ;-)
The other older lady makes an experiment with motion and rigorously determines that she is ... well ... unsichtbar. :-)
Radical New DNA Sequencer Finally Gets into Researchers’ Hands - A DNA sequencer the size of a cell phone could change where, and how, gene research occurs. One day in 1989, biophysicist David Deamer pulled his car off...
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