We need evidence-based design. Because what we are doing first and foremost is designing. It doesn’t matter how much research we do, or what method we use. There is no one right answer. It matters that we have sufficient evidence to support our choices and decisions, however we get that evidence.
Experimentation is a bit of a cold, clinical word, but you could also use the words exploration or even play. Experimentation supports the idea that there are no preconceived outcomes, leaving open many possible results. For this to happen, we have to start with the idea that “success” can come in many forms, or even no form at all. That means when you improvise with the recipe you may completely fail at making a dish you want to eat, or you may invent a whole new cuisine!