Whatever makes your sin curve ocillate
![](http://nrich.maths.org/content/03/09/15plus2/sine_curve.gif)
So, I met someone today- well, I met the in August, however we discussed this for the first time today- that also believes that life is like a sine curve. The amplitude may change, but nothing is ever constant, except change. Things are always changing from good to bad, increasing to decreasing, concaved up to concaved down.
Which brings me to the one law that I live by: Every Action Has An Equal And Opposite Reaction (thank you Newton). Because no matter what point you pick on a sine curve, you can find at least one other point that is the same distance from any other point. Also there are an infinite number of places where it changes sign, concavity, direction, etc.
Anyways, I wasn't sure there was anyone as crazy out there as me. Anyone (other than 3π/2) who would believe this theory, or way of life. But apparently there is.
So again, whatever makes your sine curve oscillate, however, just remember in π/a (where a is amplitude) radians you'll be oscillating in a different direction.