## Saturday, July 31, 2010

### Inception and Math

I went and saw Inception yesterday; it was fantastic! There were some inconsistencies in the plot, like what happens when people get shot (Do they die?? do they go back up one level?? Does it depend on their level of sedation??), but the fight scenes were original and the plot kicked some serious ass.

And, make no mistake -- I did not miss the math references in the movie. They said that every time you go into another dream-within-a-dream, the time expands by a factor of 20. So, 10 hours in real life is "about a week in a first-level dream, about a month in a second-level dream, and about 10 years in a third-level dream." They then did a similar analysis towards the end of the movie, to figure out how much time they still have left in each dream to get stuff done. --Not to mention there was a good amount of Geometry -- transformations (reflections, rotations), and even a discussion of impossible Geometric constructions (ie. infinite-loop staircases)! Beautiful.
Awesome WCYDWT material, once I can get my hands on a copy of the movie. :)

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If you are an aspiring PreCalc teacher (like me!), you might be looking around for tools or demos that will illustrate / elucidate the sometimes-confusing concepts of radians, degrees, arc lengths, etc.

Fortunately, Mr. H has a slew of good tools you might be able to use. :) He creates things with GeoGebra that I had no idea were possible! AMAZING.

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I am frustrated that Geoff and I don't have cell phones while visiting in the States. I waited for a friend for an hour yesterday at the corner of Columbus and 82nd, but still missed her in the end! argh. I felt really bad because we were waiting at two different places, and I didn't have a phone to call her with. Boooo.

But, on a good note, I did get to hang out and catch up with my friend John for a bit, before he rushed off to the airport. (This seems to be a trend with me/him.) :) It was lovely, and totally worth the two-hour commute from Jersey to grab breakfast with him at 9am in the city! (That meant I was waiting outside for the bus at 7:10am, after catching only about 5 hours of sleep!)

In other news, Geoff and I went swing-dancing on Thursday, and it was lovely! Geoff sweated through 3 t-shirts; that's a pretty good measure of how great the night was. Now my old people knees are hurting, and I'm hoping that they will recover by next Thursday (the next Fram). :)

In the meanwhile, I am going to look at property with Geoff. I anticipate this being loads of fun. (Not.)

#### 1 comment:

1. Because of the level of sedation during the final heist, dying would send you to limbo immediately. But on normal sleep or normal sedation dying moves you a level backwards. During the high level of sedation during the final heist the only way to go back a level is to receive a kick. Once in limbo however regardless of sedation levels suicide will move you back a level if not ride you through all dream levels to reality. The problem is that the nature of limbo is that time moves in such a way that you forget you are in a dream.