Conclusion: absolute truth exists, and is accessible by reason. This does not mean that by human reason we can figure out everything. But it does mean that we must use reason (guided by observation - not necessarily repeatable observation) to investigate truth - we shouldn't rely on mysticism.
This is not so, because the majority has often been wrong, and the minority right. Some examples:-
Therefore, majority opinion by itself does not establish the truth. This is extremely important to realize because Jesus Christ claimed to be the only way to God, and those who follow him truly as Biblical Christians are definitely in a minority - numbering a few million, not in billions.
"Enter into the narrow gate, because wide is the gate, and broad is the way, that leads to destruction, and there are many that go through it; narrow is the gate, and narrow is the way, which leads unto life, and few there are who find it." – Jesus Christ, in Matthew 7:13-14
No. The classification of some thing as "plausible" or "absurd" involves human subjectivity. Hence a statement may appear to be plausible to you, but prove to be false. Conversely, a statement that appears to be absurd to you may prove to be true. Let's consider examples of both.
The claims of Aristotle seemed plausible to the people of medieval Europe, so they blindly accepted them. But during the 15th and 16th centuries, the empirical method gained popularity and Europeans started doing experiments to test Aristotle. The result was that many of Aristotle's claims turned out to be false. Therefore, plausible statements can be false.
If a train plies on the railway line between Plymouth, Truro and Penzance, it cannot go from Plymouth to Penzance without passing through Truro, because Truro lies between Penzance and Plymouth. But according to quantum mechanics, an electron in an atom can do such a thing. In other words, quantum mechanics seems absurd. So does this mean that quantum physics is false? No. Our belief in quantum mechanics is a response to the evidence. Quantum mechanics does seem absurd and unfathomable to us because its predictions are so contrary to our daily experiences.Thus, something that seems absurd can be true.
"Do not keep saying to yourself, "But how can it be like that?" because you will get "down the drain," into a blind alley from which nobody has yet escaped. Nobody knows how it can be like that." – Richard Feynman, On the apparent absurdities of Quantum behavior, in The Character of Physical Law (1965) Lecture 6 : Probability and Uncertainty — the Quantum Mechanical view of Nature
So what is the way out? When something seems absurd, see if it can be reduced to a self-contradiction. This establishes it as false. When something seems plausible, see if it is logically consistent and fits with all the available facts.This establishes it as true. Truth is determined by logic and evidence, not by what appears plausible or appealing to you.
Secular people find Genesis stories difficult to believe. Muslims find the Deity Of Christ and the Nativity incredulous. Depending on your background, the Bible and its Main Message may seem absurd, childish or parochial to you. Please do not dismiss it without serious consideration. Conversely, don't just believe something because it seems plausible to you; put it to the test.