The experiment began with the Doctor materializing the TARDIS, his time machine, on the outskirts of a dense forest on Cytherea. As he stepped out of the TARDIS, he deliberately severed his connection to the universe, blocking his extrasensory perceptions and plunging himself into darkness. The Doctor's blindness was not just physical but also temporal; he had no awareness of the planet's layout, its inhabitants, or the dangers that lay ahead.
It tackles the ethical implications of science and the dangers of knowledge without wisdom.
"Doctor Adventures" Blind Experiment (TV Episode 2015) - IMDb Blind Experiment * Cytherea. * Johnny Sins.