See bold textThis is what I knew as the definition of archer's paradox. It is the bending of the arrow shaft that allows the arrow to travel to the target otherwise it would follow the path the point was aiming. That is why excessive bending of the composite shaft will cause delamination and possible failure upon release.
Paradox: The term archer's paradox refers to the phenomenon of an arrow traveling in the direction it is pointed at full draw, when it seems that the arrow would have to pass through the starting position it was in before being drawn, where it was pointed to the side of the target.
As seen in Andy!'s picture
Explaination: The bending of the arrow when released is the explanation for why the paradox occurs and should not be confused with the paradox itself. Flexing of the arrow when shot from a modern 'centre shot' bow is still present and is caused by a variety of factors, mainly the way the string is deflected from the fingers as the arrow is released.
Flex round the stave of the bow causes it to hit right of where is is pointed, recurves/AFB only offset marginally due to finger deflection
Archer's paradox - Wikipedia
As the original poster of the question I was greatfull for this explanation.OOps! I now wish I hadn't mentioned the word 'PARADOX'. Ask 100 archers at random what they think it means and the vast majority will associate the bending bit without the offset bit. Going back to the original question, all arrows bend upon loose of the string but adding excess point weight will cause the arrow shaft to bend more than the design intended leading to damage of the shaft. That was the explanation I was given by an experienced international archer and was what I wanted to pass on to the OP. This was in connection to composite arrows. The centreshot offset on my recurve is not really obvious whereas the offset on my longbow and horsebow is. Only by using the correct stiffness of shaft with a realistic point weight I achieve the desired dynamic result of the arrow attacking the target face. The arrows for my horsebow falls into the 'pound for pound' adage while the arrows for my longbow are about 10# lower. Stiffer or whippier arrows outwith this will go left or right depending on other factors meaning that I need to aim off. That's life I suppose.
I don't think it's been established to be accurate, though. I find it kind of boggling that anyone could assert that a shootable point weight would damage a shaft... I'd want to see evidence for that, as it's such a strange thing to say.As the original poster of the question I was greatfull for this explanation.
I think it is interesting to just imagine what point weight would be required to bring about the " spine change" in question. Would any readily available point that fits actually do the job?I don't think it's been established to be accurate, though. I find it kind of boggling that anyone could assert that a shootable point weight would damage a shaft... I'd want to see evidence for that, as it's such a strange thing to say.