(urth) Travelling North aka miscellaneous thoughts on Wolfe

[Tony Ellis]

Gerry Quinn wrote:
>Secondly, the 'tacking' method of travelling faster than the wind works for
>sailboats.  But the analogy between wind and light radiation doesn't hold up
>because light does not exert pressure in directions orthogonal to its
>direction of travel, as moving air does.

The sails in question aren't your common-or-garden solar sails, but
the same monster-summoning, space-warping mirrors found in the
Autarch's book and Father Inire's workshop. It's not a pressure-driven
means of transport.