asks about my favourite sf authors. A proper answer will have to wait a few days. But authors I particularly enjoy include Brian Aldiss; Iain Banks; Ray Bradbury; Lois McMaster Bujold; Ted Chiang; Arthur C. Clarke; Philip K. Dick; Neil Gaiman; Ursula Le Guin; Madeleine L’Engle; H.P. Lovecraft; Ian McDonald; Ken MacLeod; Terry Pratchett; J.K. Rowling; Neal Stephenson; Sherri S Tepper; J.R.R. Tolkien; Connie Willis; last but by no means least Roger Zelazny. More information on my tastes can be found here and here. More, as they say, later. I’ll just say I’ve gone right off Asimov after a teenage fling.
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A much simpler one is that in Terror of the Autons it’s the Celestial Intervention Agency delivering the warning and the bulk of Time Lords have forgotten about him. In the Deadly Assassin he picks up what he needs to infiltrate the Matrix again in Trial, whilst in the Five Doctors we can probably guess the mainstream Time Lords have been making a better effort to keep track of their renegades.