but then if we succeeded in the having safe and beneficial a.i., maybe it could help elinate or reduce the other risks from synthetic biology and nanotech. so now, there are a host of additional considerations we have to take into account before we can make, all things considered, judgments about these macro strategic issues, but it illustrates thinking in terms of the timing might give us more insight into these things than the simple-minded question of whether we should have technology x or not. so we can, generalize just slightly, propose a replacement of the traditional concept of sustainability which is static with the dynamic concept. so traditionally, people think of sustainability like i think in terms of achieving some state such that you could remain in that state indefinitely. so you use up resources only at the same rate as which they are replenished by nature. you pollute only at the rate in which things kind of get taken out and broken down and cleaned up. but what these considerations suggest is that instead perhaps of trying to achieve this stable state, we should try t