They don't know what the rear gear changer-thingy is called, though, so they just take a picture of it and ask Google.
All the text it picks up will appear on the right-hand side of the screen.
Then select the 'copy to computer' option that will appear below.
Or a chair that's perfect for your living room? Google How to use it Open the Google Lens app or tap on the Lens button on the Google app.
Google has two demos here that are very impressive.
A menu will pop up with a list of options.