One of the characteristics of innovation is to simplify and make more accessible technologies that previously required experts to handle them. Pregnancy tests illustrate this phenomenon: while in the 60s it was necessary to visit a doctor to perform such a test, it can now be performed by buying a $5 kit in a pharmacy. The change for a given technology is therefore translated by two factors: a reduction in costs and simplification. In other words, because the technology becomes cheaper and easier to use, experts are less and less needed for a given problem to solve. Indeed, those pregnancy tests are more and more bought online, thus removing the need for the pharmacist. In 50 years, solving this problem have moved from the doctor to the pharmacist, then from the pharmacist to the user.