(5-15) “How precisely do you know your velocity when you’re flying?” asks Nefertiti.
Cormorant reflects for a moment and then replies, “I think that, on a calm day, when I have had a good breakfast and there is joy in my heart, my cruising velocity is between 1.992 and 2.008 metres per second.”
Nefertiti raises an eyebrow and proceeds to calculate.
Given that Cormorant’s mass is 2.5 kg, and Planck’s constant h = 6.626 x 10-34 kgm2s-1, deduce the fundamental limit on the confidence he can have in his position under these conditions.