
Oh for crying out loud. This is what passes for news at lame wannabe Tucker Carlson's attempt to mimic Politico? The guidance letter was published in October 2010 and you can read it here: http://www2.ed.gov/about/offices/list/ocr/letters/colleague-201010.html
From TFA:
"All a surgeon has to do is move the pen's tip along the cut, strengthening and sealing the weld with a solder of water-soluble protein."
It looks a lot like very controlled cooking and I suspect the protein used to connect the tissue denatures in the process. It's not welding, it's hot-melt glue.
Still very cool.
Established technology tends to persist in the face of new technology. -- G. Blaauw, one of the designers of System 360