A well-guarded gateway? Or an open door for assisted suicide?

If you’ve been told you are terminally ill, should you be able to ask a doctor to give you lethal drugs so you can take your own life? That’s what Rob Marris MP is proposing in his Assisted Dying Bill, which comes before the House of Commons on Friday (11th September).

Mr Marris’s bill sets out various conditions — not the same thing as safeguards. One of these conditions is that someone seeking lethal drugs should have, “the capacity to make the decision to end their own life”. Just what does this mean?