On: Executing gradient descent on the earth

[mirimir]

Well, the Dead Sea is certainly below mean ocean level. But the deepest oceanic trenches are far deeper (~11 km below mean ocean level) than the bottom of the Dead Sea (~0.74 km below mean ocean level).

[sparky_z → mirimir]

Except its pretty clear that for this problem, as posed, we're considering the surface of the ocean to be the "ground".

[mirimir → sparky_z]

OK, sure. But the site talks about energetic boulders. And they wouldn't stop at sea level.