I disagree, if I say something as fact then I agree I should back it up with sources but if I say something relevant to the discussion but from memory then it can not be backed up with sources unless you have some qualifications as a mind reader.
This is why it is important to word responses in discussions in such a way as the two systems can be differentiated.
Further to this there is a lot of information that is not available via the web and therefore can not be linked as a source for example information from books or subscription websites.
If you wish to make a point from memory and present it as fact then you need to support your contention. If you can remember your point accurate enough to present it, you would remember where it came from. If you can't remember where it came from you probably don't remember it clearly enough to state it correctly.
There is also the problem that at some point information has to be accepted or rejected at face value for example if you tell us a cat peed on your rug should we sit here demanding pictures, DNA tests and signed/ notarized declarations that this actually happened (Lets not forget the requirement to validate all of your downstream witnesses etc.) or should we just say "OK it matches the stain" and move on.
I think most people would understand that a statement like above would not need support.
Of course you are getting ridiculous suggesting DNA tests, signed/notarized statements are needed. Even if they might give stronger credibility to your statement. The better and stronger your source the less likely it can be refuted.
I would also like to point out that if I say such things as:
- In my opinion the sky is purple.
- I believe that cats lay eggs.
I do not have to provide a source as they are views not necessarily formed from fact.
I have not said that statements of opinions need sources. But if you stated or alluded to your point being fact then sources could be requested. It could then be left to a moderator to determine whether a source was needed.
Stating "in my opinion" does not give a free ride to someone to make statements of fact without supporting them.
There is of course one other option available to you, if you do not believe something posted is accurate then you can provide sources as to why it isn't.
Two things wrong with the above statement.
1. Why should anyone be required to do someone else's homework.
2. The person disagreeing may want to spend their time looking for a rebuttal.
A lot of people who don't like to supply sources a more interested in arguing than debating, or don't understand the difference.
I know here in the US there are a lot of complaints about our public school systems, but I would be surprised if anyone here could graduate High School with out having to do a term paper. People are taught how to pick a topic, state their opinion/position and supply facts and sources to support that position. That is what needs to be done here to make intelligent informed discussions. Otherwise we will need to be satisfied with misinformation.
One thing that rings extremely hollow in this discussion is that sources can't be found on the INTERNET. Why? Because topics brought up on this forum are almost all based on INTERNET information. If it is not it quickly dies from lack of interest.
People who complain about supplying sources just want to spout their opinions and can't be bothered to support them with facts.
I am probably spoiled in forgetting that free public libraries were available in the US before it was a country. And live in a country were the right to free speech is so important. I forget free libraries may be available in some countries, but their content may be restricted by what the government wants people to know or the libraries are not available to everyone.