Dr. Smith looks up from his work and nods in agreement. "Of course," he says, gesturing to an empty stool beside his desk. "Please, help yourself."

Andy takes the seat gratefully and begins to study the various screens and readouts more closely. She glances over at John every now and then, her curiosity piqued by what she's seen so far. The doctor continues to work on the computer, occasionally offering her insights or explaining certain aspects of their research.

Dr. Smith pauses for a moment before answering. "Well, the length of time varies depending on the individual and the specific goals we're trying to achieve," he says. "In John's case, we've been working with him for several months now, and there's still some refinement that needs to be done."

He looks over at Andy and continues, "Your interest in participating is certainly appreciated. If you'd like to discuss the possibility further, we can always set up a more formal interview and evaluation process."