@poly
The issue was that we were spending 6-7 hours a day, walking around on rough, uneven ground, often in bogs that were above ankle-deep, clambering up and down steep gradients, walking many km per day, sometimes near cliff edges. I don’t care what anyone says: If you can’t turn up to a classroom without the physical assistance of either a cane or a mobility scooter, there is no way you would be able to, safely, negotiate the terrain we were traversing.
The whole point of the course was to train people to be able to carry out tasks that will be of use to future employers, whether they be commercial or academic in nature: If a person is not physically able to do those tasks, then it would be irresponsible to send them out into the market with a qualification that says they are able. It would delude the student and deceive potential employers.
Ultimately, we all have physical limitations and have to accept them and move on.
Moving on: Come to think of it, we also had a girl on the course who had learning difficulties and she had a teaching assistant, from a local university, who was trained in helping such people, assigned specifically to her, so perhaps that’s what the person you were talking to was doing there.