[technocratius]

Well I think they even multiply, making it even better news!

[chmod775]

I'd rather they add up. Minus -5% runtime there, another -5% there... Soon enough, python will be so fast my scripts terminate before I even run them, allowing me to send messages to my past self.

[Qem]

log(2)÷log(1.1) ~= 7.27, so in principle sustained 10% improvements could double performance every 7 releases. But at some point we're bound to face diminishing returns.

[hughdbrown]

.9 * x = 0.5

x ln 0.9 = ln 0.5

x = ln 0.5 / ln 0.9

x = 6.5788

So decreasing runtime by 10% 6.5788 times results in the code running in half the original time.