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I've always wondered why adding more sensors to a self driving car was such a big deal.

Yes, it makes the cars more expensive but at some point, these parts will get mass produced and they will be cheap as hell.

The more data a car has, the better it should drive.

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Once you add sensors you can't promise buyers that their car with less sensors will be just as self driving as the car with more sensors. So adding sensors is a big deal for Tesla, because they are in the market of selling a promise of self driving.

Maybe that's a harsh lesson in making promises that can't be delivered?

Or, more likely, no lessons will be learned and people will still trust what the company says in the future for arbitrary reasons.

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