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gwern comments on Wear a Helmet While Driving a Car - Less Wrong Discussion

47 Post author: James_Miller 30 July 2015 04:36PM

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Comment author: gwern 01 August 2015 08:00:59PM *  3 points [-]

I did not say $50k a year, I said $50k over a lifetime ($1.1k times around 40-50ish years, since you spend many of the early ones strapped in and driving tends to decline in old age; and honestly I don't want to project out past 2060 as it is).

You're also using a really high estimate for number of hours in the car. 3 x 365 x 60 = 32,850 miles per year.

I don't think that is extreme. As I said, I commuted that much for 4 years, and my dad spent most of his career with a 2h+ commute just for work, never mind all the other driving entailed in suburban life. Americans drive a lot.

Comment author: FrameBenignly 01 August 2015 08:20:33PM 2 points [-]

No, $2 million is median household lifetime earnings if they work for a typical 40 years which is way below the $40 million he's estimating.

Also, you just named two examples of outliers and suggested they were representative of your entire experience. Just glancing at estimates, most are between 10000 and 15000 miles per year as typical for Americans. Europeans are probably lower.

Also, Nick overestimated average driving speed which means he's even further overestimating the cost of not wearing a helmet. I calced it at around $50 per year; $.20 per hour.