Yochai Benkler writes: Tuesday’s US supreme court arguments involved a seemingly basic legal question about the future of the Fourth Amendment: do police officers need a warrant to search the cellphone of a person they arrest? But the two privacy cases pit against each other two very different conceptions of what it means to be a supreme court in the first place – and what it means to do constitutional law in the 21st century.

“With computers, it’s a new world,” several justices reportedly said in the chamber. Are they ready to be the kinds of justices who make sense of it?

Cellphones expose so much of our most personal data that the decision should be a 9-0 no-brainer. The basic problem that makes it a harder call is that lawyers and judges are by training and habit incrementalists, while information and communications technology moves too fast for incrementalism to keep up. [Continue reading…]