Cam Bunton reporting for 9to5mac:

In its blog post about the update, Google explains how the technology works, stating that as the email comes in, one network encodes the email by consuming the words one at a time and then produces a vector, or list of numbers. This vector essentially captures the message of what the email means. A second network then uses this ‘thought vector’ and creates a grammatically correct reply one word at a time. To the user, it should feel fast, intuitive and natural.

Wow. Such incredible AI work they do in Mountain View (or wherever). I’m not totally creeped out by this feature, yet, but I have this sinking feeling that I should be.