Is Collaboration a Good Idea?

In some works, I do the theory or modeling for my collaborators. So they give me the experimental data and then they ask me if I can do some modeling for them. Sometimes I just design the structure. Sometimes I only make the samples. So nanofabrication is done in my lab,. So yes, I mean, it depends on which part we do, right? "To be a good experiment list, you need to be a theoretician as well," he says.