Ernie Cordell asked Brian Clegg:

In "How to Build a Time Machine," you suggest that Mallet had ideas (frame-dragging, I'm thinking) that might come to some sort of fruition in a decade. Do you have an update for us?

Brian Clegg Ron Mallett keeps at it (though he is 78 this year) - as far as I'm aware, he's still not got sufficient funding for an experimental attempt (I'm surprised one of the tech billionaires haven't funded it). He keeps popping up in the news (most recently at the start of March 2023), but only telling essentially the same story.

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