Graphic example of the situation:

We have a basin containing water. Through osmosis or whatever process, not clearly understood, water flows into the basin. By a similarly unclear process, water also flows out of the basin. Over time, although the level in the basin rises and falls, so far it has never overflowed.

We have a vested interest in the basin not overflowing. In fact, our lives depend upon it.

Now, we don't understand all of the factors in this ebb and flow and the consequent and apparently periodic rise and fall. We do, however, understand many of the factors.

Within recent years, lots of people—lots of people—have been peeing into the basin. We see the level starting to rise, and it's rising very fast.

Now, there may be other factors involved in the rise.

But, especially considering that if the basin overflows, we can all die, it doesn't seem like a very intelligent thing to keep peeing into the basin!

Comprende?

Don Firth