[Sicon]

"How would they know? Did they measure before the project started and then measure again after it was finished?"

Exactly. Between that and the vagueness of their "calculations" ("about", "roughly"), the whole thing is laughable.

I heartily second your call of bulls***!

[Lonesome in Massachussets]

The calculation is actually very straightforward. The measurement dubious. One need only calculate the moment of interia of the water spread uniformly over the world’s oceans. Assuming a spherical shell is more than good enough for a couple of decimal places accuracy, but one can easily find displacement for the polar axis as a function of latitude and oceanic boundries therefrom and calculate the angulur inertia of the displaced mass. Repeat the calculation for the impounded mass of water, take the difference over the undisplaced moment and multiply by 86000 (24 x 60 x 60) seconds. They figure approximately a 0.00000000006944444444444% increase in the earth’s moment of inertia around the polar axis. IOW, a rainy day in Brazil.