There is also the difference between 'knowledge' and 'experience'. I have been reading about and learning more and more about reptiles for over 9 years, maybe more. I have always been fascinated about them and researched libraries etc for information about the local amphibians and snakes in my area when I was a kid (long before 'Internet' was even known to me). Desktop computers weren't readily available either, till my teens when the Commodore 64 came out. (I think the Tandy and Mac systems were later...can't remember).
So back then word of mouth and books was the only source of information on reptiles and amphibians. There is alot of information out now, in all forms. Quite a bit is rehashed info that has not changed for 20 years..other information is new and often suspect due to its 'newness'.
Some 'old' methods are often said to be the best...and have worked for long time keepers/breeders, but often new knowledge revealed risks in the old ways. Here knowledge and experience often collide.
Experience is the practical knowledge...and can reveal the difference between a person new to the hobby completely but has done their research for years prior..and just never kept any animals. This person would have lots of knowledge, but little to no experience. Doesn't mean their knowledge is useless, just its not always as easy to 'translate' that knowledge into practicality, especially when no snake or lizard is exactly like any other.
So setting up conditions for the snake to thrive in 'by the book' doesn't mean the snake will find it suitable to itself. It may not be quite as warm as it likes, or cool, etc. So trial and error and practical experience comes into play. That and not every possible answer is given in books, forums, etc. and something minor a experienced person would know, may get overlooked by the person who never bred before.
An example would be say, a computer savy person like me, instructing a person who barely understands how a computer works, but has read a few books about computers (say how to use MS Word and PC's for Dummies...) may not realize by my instruction 'click on start' that I mean left click.
And I think I shouldn't try and explain a point when I am suffering from too much heat and humidity..as I completely forgotten what the point was...sorry. Hope something interesting was revealed here.
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PHLdyPayne