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Boustrophedon ( /ˌbaʊstrɵˈfiːdən/ or /ˌbuːstroʊˈfiːdən/; from Greek βουστροφηδόν, boustrophēdon “ox-turning” from βοῦς, bous, “ox” and στροφή, strophē, “turn”; that is, turning like oxen in ploughing), is a kind of bi-directional text,
 ancient direction efficiency Greece reading
As Maccone pictures it, while broken eggs may reassemble themselves, we do not see this happen because the information about such events is not preserved. It's as if such information is, in effect, erased from our memory.

2009-08-26

 entropy physics time philosophy memory quantum direction
Snails with shells that coil anti-clockwise are less likely to fall prey to snakes than their clockwise-coiling cousins, scientists have discovered. The arrangement of the snakes' teeth makes it difficult for the reptiles to grasp these "left-handed" snails. The effect of this advantage on the survival of Satsuma snails is so great, say the researchers, that they could separate into a distinct species.

2010-12-08

 snail evolution snake coil direction left-handed protection
Sound from ultrasound is the name given here to situations when modulated ultrasound can make its carried signal audible without needing a receiver set. This happens when the modulated ultrasound passes through anything which behaves nonlinearly and thus acts intentionally or unintentionally as a demodulator.
 sound ultrasound audio acoustic direction location loudspeaker