If only a dog could be trained without corrections!!! Where has this been all my life!!!
It is a good thing dolphins aren't household companions then... and horses do require corrections to train, but, since we are talking about a different SPECIES - it really has less than zero to do with the question.
If you can only use clickers and positive reinforcement without compulsion [which as launi stated, is just corrections] then you CANNOT effectively train a dog. I am sure clicker training works, i am confident that a clicker could be used to teach a dog to sit - the same way as my voice saying 'sit' could, but how do you proof a dog on a clicker?
Please explain that to me, as when someone says they can train a dog using one i ask them how do you proof a dog with a clicker and THAT always makes them sit back and think more than twice!
As for the dolphins and whales and other animals that are not dogs... you know how much time and effort has been wasted on training? You DO NOT get reliable results, if a dolphin doesn't feel like performing or working - it doesn't happen. Show is cancelled. Period.
You will get a ''trained'' animal, only when it feels like co-operating. Sorry, but for a dog, compliance is NOT optional, when i tell you to come you COME, otherwise risk getting hit by the car speeding down the road that you are running towards. You think it doesn't happen? I am looking out my window to the burial site of my neighbours chihuahua where that VERY thing happened a few weeks ago.
As for e-collars.... not going there, get some knowledge, then comment.
If you cannot adapt or if you close you mind off to training 'outside your comfort zone' whether this be using serious compulsion like an e-collar or including more motivation - praise, toys etc, then i wouldn't put much faith in you as a trainer.
Those people sound like they let their own opinions and ethics dictate how they train, and not the temperament, thresholds and motivations of the dog dictate training, which is really the only way you can work with a dog.
I guess i should kind of answer the question too....
Clicker training - i can really see no use for it. As i said, i am sure it works, haven't looked that deep into it but i have my voice to mark behaviours. That is good enough for me.
Traditional, as in ''old school'' training?
A lot of old school training is still used today and still getting great results. I think it is hugely misunderstood and MOST people will just equate old school with cruelty. I don't.
From what i have seen, old school usually equates with results.
I used 101 different methods to train my dog, as he is was/is a frustrating little sh*t at times and even though he is very intelligent, the analytical border collie streak in him got on my t*ts more than a few times....
I did everything from all positive and all treats to some things i am sure i would get blasted for badly on here, in the end i figured out what worked best.
A combination of everything, rewards, corrections and going at his pace.
Not rushing him to learn something or correcting him before he got it into his head.
Learning to give praise or corrections at the proper time and at the same time with appropriate behaviour.
The training 'aides' i used were a tennis ball and a choke chain.