Teenagers must be made from pure quantum particles.  The act of observing them changes their location.  Predicting where they will be at any moment (or more important where they NEED to be at any moment) cannot be determined except for a mere statistical likelihood of their probable location.

Article from Discover.com:
20 Things You Didn't Know About... Mosquitoes

"8  Once a feeding mosquito is full, a chemical signal shuts down the intake. When that signal is disabled in the lab, mosquitoes suck until they explode.

9  It is hard to get upset about that."

From discovermagazine.com:

"Microbiologist Karim Nayernia of the North East England Stem Cell Institute just took a step toward rendering men obsolete. By immersing stem cells harvested from men’s bone marrow in a cocktail of chemicals that mimic the environment of the testes, Nayernia and his team turned the stem cells into immature sperm. The experiment marks the first time that any nonreproductive human tissue has been transformed into gametes. If the cells can be grown into mature sperm, the technique would allow men without functioning sperm, or even testes, to father children.

Nayernia says the technique could enable women to have a biological child with two mothers and no father. Their offspring would always be daughters, though, because sperm made from a female cell would always carry an X instead of a Y chromosome. Weirder still, a woman could conceivably use sperm made from her bone marrow to inseminate her own eggs. "

read more...