Big time. Lithium is a very good example as well. You need to spend a lot of time to find the right recipe because every rock is different. People think it's lithium, so it's easy. You know the recipe, but usually you cannot apply it. You can take, let's say, the main recipe to produce it, but you need to adapt, and every rock is different. That's why it's so complicated to try to find the right recipe and why you need to spend time and money on that.
On May 2nd, 2022. See this statement in context.