Oh I certainly agree that someone can have a different view and in some cases this might not be a serious mistake, on either side of that view. However, in other cases, this may be an indication of bad fruit and bad fruit does not grow on a good tree. It depends on the subject matter under discussion. Example, One can believe in Christ and call themselves a Christian but do they have the proper view of whom Christ is? Believing in a non-Biblical Christ will get you nowhere near Salvation.
The mark of true Christianity, is not to have differing views but to learn from one another and thru the study of the Scriptures, to come to a singleness of mind.
Act 2:44-46 And all that believed were together, and had all things common; and they sold their possessions and goods, and parted them to all, according as any man had need. And day by day, continuing steadfastly with one accord in the temple, and breaking bread at home, they took their food with gladness and singleness of heart,
This means true Christians have a willingness to learn and be taught. Only Goats buck-up against the truth when it s taught. Show me where I am wrong from the Scriptures and I will give earnest heed to those Scriptures, however, not to humanistic argument are supposition.