A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.
And from a poise at this station the plane may swoop down, at great disadvantage if close to the back of the wave, at various slopes and directions till it cuts into the air that is being raised by the face of the following wave, which again enables it to resume its velocity.
Businesses who are members of Businesses for Social Responsibility or the Social Venture Network are internalizing costs on a voluntary basis and therefore raising their costs of doing business, but their competitors are not required to.