I have asked Google's Artificial Intelligence tool Gemini to draw me a Tunnel Boring Machine knife. This is the drawing I got:

This was my exact query to Google Gemini:

"Can you please draw a photograph of a TBM (tunnel boring machine) knife, a TBM ripper, a TBM scraper, a TBM Disc Cutter, a TBM segment, a TBM Single Disc Cutter?"

And the intermediate answer was:

And I got the first photo when I wrote in response (exactly, without correcting my typos):

"A srawing of a kitchen knife to depict a Tunnel Boring Machine knife? The others are very bad and have nothing to do with Tunnel Boring Machines either but at least they do not look like kitchen tools! Hirariously bad bad bad. Why do you not use Google search at least to see how these look like? "

Have a great weekend people.