The TruthSift algorithm (US patent number 10, 043,134 ) combines member contributions logically, point by point. On TruthSift, a statement is rated Tentatively Established if and only if an unrefuted proof is provided. If you don't believe the proof is adequate, you may challenge it if you can state a rational reason why you don't believe the proof. A challenged proof is not considered Tentatively Established unless and until someone explains what's wrong with the rebuttal.
Other debate sites present somebody's opinion, they don't combine multiple inputs logically. They decide by voting, which leads to groupthink. Many things that are believed true by a majority can be established as being delusional or propaganda.
TruthSift is not for establishing those. If you want to add a topic or a statement to TruthSift you should phrase it carefully so that you believe you can establish or refute it. For example, a title like "vaccines are safe" is too vague to be established. TruthSift deals with this by allowing a body of the statement where it can be spelled out in detail, specifying exactly what you hope to establish as considered "safe". Also, while it may be impossible to rigorously prove "anthropogenic global warming is heating the planet by .5 C per decade" it might be easier to establish "the preponderance of the evidence indicates anthropogenic global warming is heating the planet by .5° C per decade". Note though that this is not established merely by counting papers for and against. TruthSift statements should provide rational arguments and 100 papers can be refuted by one rational argument.
When a TruthSift topic is completely expanded, you should have a carefully worded statement that you actually know nobody can raise a rational dispute with. We believe that is better than having a vague grandiose statement that you believe but is likely wrong.
A statement is tentatively established if it has a tentatively established proof reply and every challenge reply has been tentatively refuted. If you feel the proofs are insufficient you may challenge the statement.
A statement is also tentatively established if no proof statements for it have been offered and every refuting statement targeting it has been tentatively refuted. This is to handle statements that are self-evident or contain their own proof in their body. If you don't believe such a statement is evident, you may challenge it asking for further proof.
If a statement is not tentatively established, then it is considered tentatively refuted.
TruthSift supports probabilistic ratings if switched to probability mode. This allows users to simply collaborate on constructing a Bayes net modeling any question on all supplied evidence, and automatically compute the probabilities predicted using a fast Monte Carlo algorithm.
The author of a topic can set it to probability mode in the settings panel. In probability mode, contributors are asked to assign a "proposed belief", to the statements they add, between zero and one to reflect how much confidence they have that their statement either proves or refutes its target. In probability mode, in addition to pro and con statements, users can add test statements which are like epidemiological tests that provide evidence favoring the truth or falsehood of their target. Given some observation claimed in the body of the test statement, the author of the test statement supplies a likelihood of the observation given that the target statement is true and the likelihood of the observation given that the target statement is false. According to Bayes law, this evidence multiplies the likelihood of the target statement by the ratio of the first number to their sum.
A proposed belief can also be assigned to the test statement reflecting the confidence in the observation being true. TruthSift displays the computed probability for every statement as its "probability" which may be viewed in the pop-up when you hover over the statement or at the bottom of the statement's body. TruthSift makes it easy to construct and evaluate Bayes nets that combine all available evidence according to Bayes law.
Click on any of the categories (left of home page screen) to see all the topics under that category. Click on any of the topics to go to the topic's graph page.
To view the history of a topic being updated use the two gold buttons at the top of the graph on the right. Click on '1st' to select the first statement added to the graph and open two more gold buttons: left arrow and right arrow. Click the right arrow successively to see each statement added in sequence. Likewise, clicking the 'Last' button will select the last statement added to the graph and clicking the arrow button will successively select the next to last and so on.
There is also an "Edit History for Topic" tab at the very bottom of the graph page that will allow you to explore the history of when statements were added.
The topmost level on the graph view shows the topic title with the topic status. The graph gives a diagrammatic representation of different levels of supporting and refuting statements for a particular topic statement.
A statement box has two elements: - Pro or Con - All the pro statements are in green boxes and all the con statements are in red boxes. - Status - All the established statements are marked with a tick mark. All the refuted statements are marked with a cross.
When you hover the mouse pointer over a red or green box, in the graphic view, the title and body are displayed in the upper left corner of the window.
Clicking on the topic title will take you to the statement's graph page. The graph page for a topic statement displays the graph at the top and the topic statement detail information at the bottom.
Below the body of the topic statement you will find a reply button. Clicking on that will open a window and allow you to add either a proof or a challenge.
Similarly, you can select any node in the graph. This will display the title and body of the statement below the graph. A reply button at the bottom allows you to either add a proof or a refutation to that statement.