Please Register and login to reply and use other advanced options

Posted by amdx on March 24, 2012, 12:52 am

This guy tries to explain a simple math problem to his wife,
but she has a slightly different understanding.

Mikek

Posted by Mark F on March 24, 2012, 3:50 pm

wrote:

> This guy tries to explain a simple math problem to his wife, > but she has a slightly different understanding. > > > > Mikek

Somehow she gets the right answers at several points
58 minutes (for the original question of how long for 80 miles at
miles per hour. (correct is 60; off 3%))

7 minute miles is 10 miles per hour (correct is 8.5; off 20%)

She also says that (automobile) tiles go 400 revolutions per mile
I think a typical circumference is about 8 feet, so 700.
She wasn't so close here, being off more then 40%.

I'm not sure if she is doing the arithmetic and messing up
or if she is estimating from her unstated experience. (Counting
the tire revolutions would be hard, but maybe she read it
someplace.)

At a few points she wants to double something when she should
be halving it. We can't tell if she'd do better with paper and
pencil. It seems like for some reason she thought the problem
was complicated and can't do a reset to get back to the definitions
of things. Either that or she had a stroke and some connections
that used to be there are missing. Giving her the problem
with pencil and paper might get her to reset or to get the
answer trivially using another part of her brain.

Posted by Mark F on March 25, 2012, 4:41 pm

> On 3/24/2012 10:50 AM, Mark F wrote: > > wrote: > > > >> This guy tries to explain a simple math problem to his wife, > >> but she has a slightly different understanding. > >> > >> > >> > >> Mikek > > Somehow she gets the right answers at several points > > 58 minutes (for the original question of how long for 80 miles at > > miles per hour. (correct is 60; off 3%)) > > > > 7 minute miles is 10 miles per hour (correct is 8.5; off 20%) > > > > She also says that (automobile) tiles go 400 revolutions per mile > > I think a typical circumference is about 8 feet, so 700. > > She wasn't so close here, being off more then 40%. > > > > I'm not sure if she is doing the arithmetic and messing up > > or if she is estimating from her unstated experience. (Counting > > the tire revolutions would be hard, but maybe she read it > > someplace.) > > > > At a few points she wants to double something when she should > > be halving it. We can't tell if she'd do better with paper and > > pencil. It seems like for some reason she thought the problem > > was complicated and can't do a reset to get back to the definitions > > of things. Either that or she had a stroke and some connections > > that used to be there are missing. Giving her the problem > > with pencil and paper might get her to reset or to get the > > answer trivially using another part of her brain. > > After reviewing the video, she did get a couple of things close, > but I don't think she knows how or why. > But then she goes into how many time the tire go around, it's heavier > so it goes slower and 40 miles at 40MPH is not an hour you cut it in half.

Assuming nothing is broken from a stroke or some such thing, she
probably just needs someone to sit down with her and teach her
dimensional analysis. Then she won't multiply when she should divide,
etc.

> The more I watch the video the more endeared I'm becoming of her. > Mikek

Posted by Michael B on April 5, 2012, 3:37 am

> This guy tries to explain a simple math problem to his wife, > but she has a slightly different understanding. > > Mikek

> This guy tries to explain a simple math problem to his wife,> but she has a slightly different understanding.>>>> Mikek