SIGNS OF DECLINE: Incurable STDs. “If gonorrhea, chlamydia and syphilis become incurable by 2020 and that affects 1 million people per year, how fast do adults alter their behavior? Even if we are a nation of 317 million, remove the under 15 and over 70 crowd and the pool gets smaller. Chip away with the morbidly obese or happily married, and the pool gets smaller still. Those 1 million infected become a greater chunk of the sexually active and single crowd.”