On Thursday, December 12, 2024 at 1:46:39 PM UTC-7 Brent Meeker wrote:




On 12/11/2024 11:28 PM, Alan Grayson wrote: 
> It says "GARAGE" so it must mean garage frame. AG 

Perhaps if you looked at the diagrams for a full second you would notice 
that each diagram has a label of "GARAGE" for the worldlines of the ends 
of the garage AND a label of "CAR" for the worldlines of the ends of the 
car. 

Brent


I did, but I can't wrap my head around the idea that a car passenger would
experience a crash at the back door, AND a NON crash produced by the 
garage's frame (assuming the car stops when fully inside garage). This
seems to be the prediction produced by treating frames as equivalent. AG 

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