So why teach students the reef knot as a bend, if there are better knots out there which are not more complicated but secure?
The zeppelin or the butterfly bend for example.
Why teach anybody the clove hitch instead of the bundline hitch (they get the clove hitch for free in that one)?
Students of knots want to learn the fundamentals. Non-students don't. A Clove Hitch is a fundamental knot that is a building block to many other knots. A Buntline is not.
I think you may be bootstrapping your knowledge onto someone else. Let's assume the student knows zero knots. If you teach this student the Buntline and not the Clove Hitch, then the student will be stuck in a relatively small box. In contrast, if you teach the student the Clove Hitch and then highlight the Clove Hitch in several other knots, then a light bulb should go on in the students head. With a little luck, the student will "get it" and will seek their own knowledge of knots.
Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.
I fully agree with you, but I thought we are talking about students who have no interest in knots. They only want to learn a handful (basic set) of knots that gets them through life. The starting post pointed out that the currently taught knots (and the reef knot is one of them), are somewhat deficient as standalone knots.
The ideal case is to teach fundamentals to build on, to teach general principles of knotting, encourage seeking of their own knowledge of knots. But that is for students who are interested. I think that should come later, in the advanced class as it were, after we give them a small but fine toolbox of simple, secure and versatile knots. That way, even if they are knot interested beyond that, at least they have a better hitch then the clove and a better bend then the square knot.
Why should they not profit from our knowledge and learn some knots that have been tested, discussed, improved etc. before they learn basics to find their own ideas?
The danger is that they are taught basics, they have no interest in learning more and they go on using those basic knots for all sorts of tasks for which they are not really recommended or suitable.
The Surrey-six approach is, I think, an attempt in the same direction. That, combined with Barry's approach of teaching problems and then give them the right knots to solve those problems, should teach them good knots, give them knowledge on when and how to use and combine them and what's more, perhaps kindle the interest in knots so they come back for more. And then we teach them basic principles, more complex knots and so on.
@Dan
why go through all the trouble and tie a reef knot and back them up with double fishermens, when there is a zeppelin or butterfly bend available? Or indeed, why bother tying a reef knot first if you are going to tie the double fishermen afterwards anyway. It can handle it by itself, so you might as well drop the reef.
The point is, I would not use this knot (reef knot) for bending ropes, for heavy duty or critical tasks. Whether it is more secure then some people claim or not, one should not use a knot if he/she cannot be certain it is secure. Simply use one that is and has been tested.
With regards to Ashley: I don't know how he got his knowledge, but I wonder why he would put a warning for the reef knot in, if he did not know it to be insecure?
Why bother? Personal dislike of the reef knot perhaps? Or maybe he witnessed incidents while aboard ship? We can only speculate, but I think such a warning should not just be dismissed. I think he put it in there for a reason, even though he does not give any further data. I guess we just have to take his word for it.
But then again, we can all go ahead and do some testing with the reef knot.
@ Knot4u
We discussed that knot you showed before. You can see it as a reef backed up with bowlines or you can see it as an improved bowline bend. For me it is the latter, because all you do is to reef knot the bowline loops (of course you have to tie at least one of the bowlines last) and you can omit the reef knot and you still have a secure bend, the bowline bend. Therefore the reef knot merely improves the bowline bend and not the other way round, to my mind.
P.S.:
Just don't get me wrong. I do teach and use the reef, but more "en passent" and only for casual use as a quick binder or bend, provided there will not be any load on that knot, let alone a person dangling at the end of the rope. In general I discourage using it as a bend, because it is just as quick and better to tie a zeppelin or butterfly. Well, for rubber bends, the reef might be the simplest option and that is fine.