Even very young children perform rudimentary experiments to learn about the world and how things work.

An experiment is a specially organized form of interaction with reality, during which humanity tries to determine whether the Universe behaves according to a hypothesis or once again has its own plan that it did not bother to share. In essence, it is a ritual for testing ideas for durability: a proposition is taken, subjected to pressure from conditions, variables, and circumstances, and then carefully observed to see whether it survives.

Usually, an experiment is used for two things: either to confirm that we were almost right, or to let the Universe politely explain why we were wrong. In either case, the result is considered useful, although sometimes slightly humiliating for the original hypothesis. Experiments come in many forms — from modest, everyday ones to those that look like attempts to recreate the conditions of the end of the Universe in a laboratory. A child, for example, may conduct a simple experiment by testing how objects fall to the floor, each time pretending that the result is slightly surprising. At the other end of the spectrum are large scientific collaborations that spend years trying to capture subatomic particles using instruments whose complexity sometimes exceeds the complexity of the question itself. Between these extremes lie all other experiments, including completely informal investigations such as choosing the best chocolate through tasting — a method that combines science, intuition, and deep emotional investment. Despite their diversity, all experiments share a common feature: they attempt to transform chaotic experience into structured knowledge, even if the process looks like controlled chaos with notes.

A key element of any experiment is the control — a specially created “version of reality” in which nothing changes, so that it becomes possible to understand what exactly changed in the other version. It is a kind of parallel reality that exists only to prove that the main reality is behaving suspiciously. Ideally, all variables are accounted for, all conditions are controlled, and there is nothing uncontrolled except the Universe itself, which still occasionally decides to be unpredictable. In the end, an experiment is a way of negotiating with reality: we ask it questions through conditions and variables, and it answers with results that then need to be carefully interpreted to make sure we understood the answer correctly.