Validity; that means, no deficiency.
Validity cannot be applied to a thumbnail definition that did not pass through the test of time. In order to pass through the test of time, the thumbnail must be objectively useful to several people in various contextual situations. A thumbnail cannot be created by a single person without being challenged by others. In other words, getting only one person to agree with your proposed thumbnail is closer to the beginning than the end of its development.
“Concepts such as success and leadership cannot achieve validity in their own rights. You can never become absolutely successful. The best you can achieve is being successful within a specific field. You can never become an absolute leader. The best you can achieve is being a leader within a specific field. The main reason why many failed to become a successful leader is because they do not know what a field truly is. This is where Thumoslang is at its best. Field; that means, context for nomenclature. The complexity of your nomenclature determines the level of success in your leadership. For example, if you know only two chemical elements, your nomenclature in chemistry is too simple for you to become a leader in chemistry.” — Nickantony Quach at 11 PM on May 7th, 2020