I'm skeptical about spiritual matters. How did Sai Baba handle visitors who were doubtful or had a 'clinical interest'?

The story of Boss Dharamsee in Chapter 35 provides a powerful example of this. Dharamsee arrived with a skeptical, 'clinical scrutiny.' He mentally questioned Baba's sainthood when given grapes with seeds, which he disliked. In response to this internal doubt, Baba not only knew Dharamsee's thoughts but miraculously transformed the grapes into seedless ones when he commanded Dharamsee to eat them. This direct, personal experience shattered Dharamsee's skepticism, causing his ego to drop away and be replaced by love and a firm determination to return to Shirdi, demonstrating how Baba handles doubt not with debate, but with transformative experience.