Splash!

So the Chinese space-station came down safely in the Pacific with no loss of life.  I would feel happier about this if it wasn't for the fact that no-one was able to determine with any accuracy just where it was going to impact.  It's all very well to assure us that the world's surface is over 70% water and so statistically it's better than 2-1 on that anything dropping from space will land in water, but I would have thought (hoped?) that modern technology could have come up with a more precise answer.