chapter  x
3 Pages

( = /b) and n are

In actual fact this last possibility may often be reached, but it should not on that account give rise to any serious dilemma. The only practical significance it can have is that an increase of capital is sometimes distributed between two different investments-two types of machine of different durability (though otherwise identical), both yielding the same maximum return on capital. We have confined the number of different investments to two, because for technical reasons it often does not pay to manufacture capital-goods lasting for intermediate periods.1