Steve
Mostly Harmless
Good points. If it helps, I'll explain how I think of expertise. Expertise is a spectrum. However, there is a very clear difference between a lay person and an expert.if we could drop the private war of words going on, there are some interesting points here
steve
your using the term expert like it has some universal definition, clearly there are people in the world who most people could agree are experts, these general have a professorship or some such,
for everyones elves its a comparative term, you may have greater expertise than someone else, but that doesnt make you an expert, unless your the one with a singular level of expertise/ qualification. there can only really be a very small number of experts in any field and as they seldom agree on anything it throws the whole system of experts into doubt
for instance i was classed as an ''expert witness'' in my chosen field, however the other side of any court case would find another expert who disagreed with me. we both couldn't be ''experts'' or there would be only one opinion
even more, im skilled at adult training( employee training and development), i have a post grad degree in such, , im not sure that makes me an expert just proficient, the guy who wrote the book i revised from is the expert
however using such expertise as i had in training i found no difficulty in training people in subjects i was far from an expert in, just as long as i a) understood the material i was teaching and b) knew more than the people who i was teaching,,, teaching fire safety when someone from the fire brigade has turned up can be problematic, you immediately bow to there expertise and ask them to do the presentation, they general cant resist
though convincing people who know more than you, that they know less is a really really valuable expertise to develop and may quite possibly be the only thing in the world i am indeed an expert on
Think about a trade carpenter... at least, how it works in the USA. A person who isn't a carpenter is a lay person. There are people who are learning to be carpenters, who are called apprentices. There are people who are proficient, called journeymen. To a lay person, a journeyman could certainly be considered an expert, as they are competent to perform the full range of the craft independently. And then there are masters of the craft. Those folks are experts among the experts. And there are ranges within each of those classifications.
A black belt in BJJ is, by any objective measure, an expert. But there's are black belts and then there are black belts. If that makes sense.