Invention and innovation: an introduction

18.2.5 Trialability

It helps to be able to try innovations before buying. While this isn't common for most innovations it can reduce any uncertainty the buyer might have about committing to a purchase and can increase the speed of diffusion. Buying a car usually involves a test drive that, although it probably isn't a fair reflection of the range of conditions under which the product will eventually be used, is better than nothing.