Are they only one?

Exactly!!

I think my membership name states my point (and answers your question) nicely when it comes to Engineers, 'Jack of all trades'.

The thing about Engineering is that 'Engineering' is so broad a field that it is not uncommon for a number of the fellow Engineers on this site to have had a lot of experience in many different and varied scientific and engineering fields. I know I have.

The other thing about Engineers is that part of our training and drive is in problem solving and the ability to quickly find out (or reconfirm) what we don't know or only have a basic understanding of. The use of the internet (or that handy text book on the nearby shelf that you so rarely read now days) plus the natural delay of the internet (giving us some time to think or confirm our ideas, possibly with an example) are most likely what is giving you the idea people seem to be able to answer questions in great detail seemingly off the top of their head.

There is no super secret group of scientists and engineers posting under a few different aliases.

It all comes down to "experience"! There's years of it here

Which one(s)?

An older term for wide-ranging knowledge in many areas, and conversancy in almost all areas, was "Renaissance Person." Now that the total of human knowledge has grown so large and specialized, it is increasingly difficult to keep up with so much. Nonetheless, a liberal education including natural sciences, social sciences, humanities, and some technical specialties can help. So does a wide range of on-the-job challenges. This tends to take quite a few years to accumulate.

A curious mind, enthusiastic reading, willingness to tackle all sorts of problems, and an open society are probably one's best friends in striving for well rounded experience.

It's a mixed bag here. Some are experts within a particular field, all the way down to people like me...............a curious tinkerer that knows a little bit about a lot of things.

One thing's for sure, there is power in numbers! Very rarely does a topic come up, that someone here doesn't have hands on experience with.

It's pretty awesome in the fact that it's a two way street too. Having this many smart people in one spot that actually derive pleasure from sharing their knowledge, and helping someone out is very cool.

Exactly!

"so my question, are these members only one or they are a group of members ,all registered under the same name ----- I'm on doubt"

No, we are individual members but I have heard tell that some think we all look very similar to each other.

I'm not an engineer (I have never even driven a train!) but I like to read and do research. Many of my responses are from my own mind (warped as it may be) but a lot are from internet searches that the OP could have done on their own. Still others are from older threads that I have read here on CR4.

There is a wealth of information on the internet and also here on CR4 to be had. You only need to look for it.

And I am only ONE person (if you don't count the many voices in my head).

doubt?.... what you know is enough (nice tag line). I wish I was conversant in multiple languages, as so many of you, in other parts of the world are. Smiles, Ray

What you are observing is simply the synergy of CR4 in which the total is greater than the sum of its individual parts (members) so, we should expect our answers to be collectively better than even the best of our individual members.

We are fortunate to have a diverse global membership composed of members who are willing to share their life knowledge and experience with those who want to learn and take advantage of that knowledge and experience..

Perhaps the greatest gift a senior member can give is to mentor and pass on knowledge and experience (both good and bad) that has been acquired over a lifetime. It also provides that senior member with the occasion to perhaps think about things he has not thought about for many years.

to all contributors

thank you for yours valuable replies . I preferred to stop at a little far to gave a chance for displaying all different views .

I know will that accumulating experience is a result for a long working years in different fields, in additional to personal capability for searching and sometime struggling to face different challenges .

If it's the case. we will be experts in our fields. but not in other fields which we didn't't deal with before . it's the main reason for my question.

Finally I find the answer through yours appreciated answers .

It's the internet searches including free encyclopedia in additional to CR- 4 which I missed and delayed for long time. Am I write?

best regards , hoping all success for all of yours

It is more than experience. Some people do not learn from their experience. They have "one day experience repeated 20,000 times.

Some have a method of learning and growing. Their experience is valuable.

It is the attitude for continuous learning and commitment to continuous improvement that explains your observation.

P.S. Look up Bricoleur:

http://cr4.globalspec.com/blogentry/7683/Bricoleur-or-Engineer-or

Milo

I missed that one back then. Interesting and very serendipitous, you will see

I look forward to it![p]

milo

CR4 is actually an ongoing experiment.

The anytime, interuptable universal intelligence test for people and computers

By Gizmag Team

00:12 January 28, 2011

Researchers have developed an "anytime" universal intelligence test – a test that can be interrupted at any time and continued later, but that gives a more accurate idea of the intelligence of the test subject. The test, developed by researchers working in Spain and Australia, can be applied to any subject, whether biological or not, at any point in its development (child or adult), for any system now or in the future, and with any level of intelligence or speed, making it ideal for evaluating the progress of artificial intelligence systems. Read more