The world had reverted back to 1989. I needed a doctor’s appointment for the diagnosis of my left eye, which was now completely red, including the iris.

The man at reception suggested that I pay £50 for an evening consultation with the hotel doctor. I couldn’t wait that long so requested a copy of the Yellow Pages so that I could look up a local medical practice.

The plan was to make an appointment by telephone using my mobile phone. But then I remembered that it was 1989 (hence the Yellow Pages) and I didn’t yet own the technology to make cellphone calls.