@Andrew Jones 2
Actually if you read the article you will find that's what it says:
Google tried dog-whistling, but found that PCs are set up for sound humans can hear, so reverted to a trilling series of notes.
Actually if you read the article you will find that's what it says:
Google tried dog-whistling, but found that PCs are set up for sound humans can hear, so reverted to a trilling series of notes.