Pi Cars
 

[url]http://i.gizmodo.com/5223071/the-pi+mobile-races-at-imaginary-number-speeds[/url]

[url]http://www.carloslabs.com/projects/200712B/GroundZero.html[/url]

You needn't be smarter than a 5th-grader for this.
 

[url]http://tierneylab.blogs.nytimes.com/2009/04/27/the-unknown-puzzle/[/url]

[quote=cheesehead;171742][URL]http://tierneylab.blogs.nytimes.com/2009/04/27/the-unknown-puzzle/[/URL][/quote]

I presume everyone got this one a few seconds after they saw it. I don't know why it's supposedly so hard.

[quote=10metreh;171771]I don't know why it's supposedly so hard.[/quote][spoiler]Because some folks are more adept, perhaps through experience, at making a paradigm shift (or, at least, at remembering how they viewed the world as a pre-fifth-grader) than others[/spoiler] -- as illustrated in the comments, both the ones with incorrect answers and the ones that have the correct answer for the "wrong" reason [spoiler]such as #1, #11 or #22.

I thought the comments would have monotonously correct answers after #25 (which stated the same logic I used), but was surprised to see how many of comments #26-#50 insisted on another answer, disregarding #25's logic which seemed impeccable to me.

IMO #51 made the best argument for the other view. Maybe I'm wrong, after all?

Nah[/spoiler].

- - -

I posted this here because I didn't expect much discussion worthy of our Puzzles section.

[URL]http://bp3.blogger.com/_sGYULzoQCgA/RiR7L_dyCLI/AAAAAAAAAdU/2COTRQtZAk8/s1600-h/Ladies+Home+Journal+Dec+1900+paleofuture+paleo-future.jpg[/URL]

[quote=cheesehead;171920][URL]http://bp3.blogger.com/_sGYULzoQCgA/RiR7L_dyCLI/AAAAAAAAAdU/2COTRQtZAk8/s1600-h/Ladies+Home+Journal+Dec+1900+paleofuture+paleo-future.jpg[/URL][/quote]
what date was that written?

[QUOTE=henryzz;172275]what date was that written?[/QUOTE]Read the URL!

Currently relevant word-of-the-day
 

[URL]http://www.merriam-webster.com/medical/fomite[/URL]

[url]http://www.physorg.com/news160994102.html[/url]

New Pattern Found in Prime Numbers
May 8th, 2009 By Lisa Zyga Prime Numbers

Prime Numbers

Prime numbers have intrigued curious thinkers for centuries. On one hand, prime numbers seem to be randomly distributed among the natural numbers with no other law than that of chance. But on the other hand, the global distribution of primes reveals a remarkably smooth regularity. This combination of randomness and regularity has motivated researchers to search for patterns in the distribution of primes that may eventually shed light on their ultimate nature.

[url]http://www.nv.doe.gov/nts/tours.htm[/url]