Everything which flies is vastly heavier than the air.
But in the interval their duties vastly multiplied.
Even in historic times it has vastly changed the aspect and configuration of the country.
The reasons were not understood until the researches of Wailer demonstrated the difference between the effects of merely dead loads and of live loads, and between repetitions of stress of one kind only, and the vastly more destructive effects of both kinds alternating.
This house will be cheaper to build than a house today and worth vastly more to you for all the cool things it does.