lets rotate that wave just 90'.. let it dance and be mused.
life as i know it is a sine (or if you prefer, cosine) wave of some sort. perhaps closer to a rollercoaster, not quite rigidly symmetrical. just enough to see that it always is posed with a mutual antithesis. up then a down, for an instance. well, never really down, just downward i suppose, as it will eventually hit the cusp and start again, upward. wait. may be it's not even down, if i tilt the axis, just about 90', it'll be just a side-to-side. whammy. not up or down. looks as if it's dancing. with good sense of beats, even! that sounds much better, free from the built-in context of: up = good, down = bad. it should be more than sufficient to realize that such simple directions 'up' and 'down' requires the another to become significant. if there is no axis or a dividing marker, we can take the wave, flatten the hell out of it, and voila, it's just a line. and a straight line, you can always rotate it enough to make it into a horizontal axis, anothe...