How smart are Gmail’s ‘smart replies’?

When Seamas O’Reilly responded to all his emails for a week using only Smart Reply, our columnist’s messages suddenly became spookily jaunty. Did his friends spot the difference?The philosopher Jeremy Bentham was famed for his panopticon, a hypothetical circular prison that was designed in such a way that its inmates never knew whether or not they were being observed. This would, his theory went, encourage prisoners to presume they were always being watched, and thus act accordingly.