I’m 83 and was recently diagnosed with mild cognitive impairment. One of the difficulties I’ve had is with my sleep. I think my perception of time has changed. I find it increasingly difficult to keep track of the time. As a result, my sleep patterns have been very erratic. For example, I used to get up in the middle of the night to take the dog for a walk, thinking it was time to get up when in fact it was 3 a.m. It definitely frightened my wife when I did that. But one of our sons has come up with a gadget which projects the time onto the ceiling above the bed. I hop into bed and push the button and the time comes up, displays it up on the roof. And it’s quite big, bigger than the little alarm clock next to the bed, which I often to forget to look at. So now when I wake up in the middle of the night I can clearly see what time it is.