I congratulate the hon. Gentleman on securing this debate on a very important subject. Like many Members, I have constituents and family members who are affected by arthritis. Does the hon. Gentleman agree that when we consider people with arthritis and employment, and the benefit system as well, it is important to take into account the fact that some days people are able to work and on other occasions that is not the case? That needs to be reflected in how we treat people with arthritis.