Necessity is the mother of invention. The father is unknown.
The following patent was issued by the US Patent and Trademark Office on March 29, 2005.

Solo-Operable Seesaw patent#: US 6872145 filed under Toys view the full patent  | comments (52) posted on 5/12/2005, patent issued on 3/29/2005 The pictorial definition of the word "loner". Why is an invention like this necessary? The inventor claims that demand is on the rise due to declining birth rates. (Hey, only-child, ever hear of a pogo stick?) But the real inspiration came from the schoolyard bully: "a seesaw plank can be a dangerous object in the hands of a mischievous child who may abruptly pull down on one end when another child is passing by the opposite end, causing the opposite end to rise quickly and potentially striking the passing child." I never thought I'd see 8-year old bullying tactics so accurately described in a government document. It's like Abu Ghraib, kiddy style: "because the seesaw operates on the principle of counterbalancing weights, injury can result if a rider suddenly falls or jumps off the seesaw while the opposing rider is high in the air, particularly if one rider is substantially heavier than the other. In this scenario, the opposing rider is sent crashing to the ground and the sudden impact may jar a child's joints or cause spine or tailbone injuries." Too bad Fatty, your superior weight and clever use of gravity has been stripped from your arsenal.

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I wonder if the value of having a tool that kids can use to test their trust of one another (not jumping off suddenly), situational awareness (am I about to walk by a see-saw that has a bully on the other end holding it ready to strike?) and teamwork (steady rhythm and predictable, consistent pressure for maximum results), and how this invention destroys that. Let kids sort their own stuff out. It's how they learn. Bubble wrap the playground and your kid will be vulnerable to anyone who can pop a bubble.

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Walter Kauffmann Neto | Jul 13, 2007 5:36 PM
How lonesome can humankind get.... As a non native speaker I imagine that "seesaw" cames from the noise that it makes. So this wonderful machine should be called see-see ou saw-saw.... I see no use for children on that....adults may be.....

| Sep 11, 2006 9:56 PM
I don't think it should be marketed as a loner seesaw... but I think it may have other cool uses, though. It's all in the marketing.

Tampa Tom | May 20, 2005 8:55 AM
"I'm so lonely....." Now, just how silly will you look seesawing all by yourself? It's like going to the prom stag - everyone knows you can't get a date.

Spiffo | May 12, 2005 8:40 PM
nintendo gameboys, and now this. And I thought playing with friends was fun, silly me!

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