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Originally Posted by MMM
Then I don't understand this statement:
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Japanese elementary school by age;
1st grade - 6 to 7
2nd grade - 7 to 8
3rd grade - 8 to 9
4th grade - 9 to 10
9 to 10 year olds learn romaji as part of the 4th grade curriculum. Children who are
under 9 or 10 are far less likely to be able to read it. Anyone above that are is pretty much guaranteed to be able to read it.
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Also, it's highly unlikely they'd ever get to Japan.
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I`m going to agree with this. Most balloon releases end up falling within 50km of the release point. It`s very very rare for a single balloon to make it more than that (Happens in very rare circumstances, where air currents keep the balloon low while strong winds keep it moving.) Once the balloon is so high in the sky, it expands and pops because of the low atmospheric pressure.
Multiple balloon clusters, all partially filled to counteract the expansion (the numbers are so that if some do pop all will not be lost) still have trouble getting over 250 km. Unless you`re already in Japan, the chance that they`ll be picked up in Japan is pretty much nonexistent.