Mac,
Interesting thoughts on single triggers but the fact that world class clay target shooters rely on single triggers for their competition double guns would surely suggest that quality single trigger mechanisms do not suffer from reliability problems.

Also two quality seperate trigger mechanisms on a two trigger double does not guarantee that if one fails the other will always still operate.
Jack Lott had total failure of a Holland Royal when part of one lock broke and rendered the rifle unshootable.

If you have a read of page 326 of African Rifles and Cartridges you will see that Taylors non use of single trigger doubles was NOT because he thought them to be any less reliable than 2 triggers.

Sutherlands Elephant tally was documented where Taylors was not, and as Taylor points out himself, Sutherland would not have continued to use the single trigger system if he was in any doubt about its reliability.

Now regarding authors, I dearly wish that Fletcher Jamieson had achieved his goal of writing a book dealing with his own experiences of African dangerous game hunting.