I do think Mr. Dixon as an expert should have taken exact measurements, at least that's what I would personally expect - so I can't say Nel is wrong on this occasion - not that for a second I'm backing Nel, but I think you know what I mean.
Measurements are actually quite important, and he's really talking about the evidence given in court by the Stipps. Mind you, Mr. Dixon won't be swayed, he is fully confident about his evidence, and won't be budged except for that one apology when he said he had made an error (which he did).
I agreed with Dixon when he mentioned the curtains, naturally (or am I just stupid) when fully opened, even at night in a full moon, the curtains let in quite a lot of light, but not when closed - oh duh! I think I'm stupid here. Nel can be so infuriating 'what was the cause of that light?' the witness already said this.
The man has stated that he puts external elements out of his line of sight - I see nothing wrong with this because he was supposed to be seeing OP's house externally and internally. He doesn't read newspapers (neither do I), he never watches tv, indeed he doesn't own one, and he doesn't own or listen to a radio - wow in SA all I can say is, there's nothing else to do, so presumably he's an avid reader.[maybe this will help the others catch up with me!]
I have been reading about Gerrie Nel, he is inideed, quite a figure in SA and elsewhere's legal circles. He handled one of that country's most celebrated trials, the Selebi trial, even being arrested at his own home while working on it.