Defining your terms is a good way to begin any analysis, though for the wide physio community this is usually thought of as evidence giving credence and repeatability to techniques and methods that yield verifyable results.This is almost always gained through properly conducted research. Though not always so. Clinical information is used by every therapist to adjust techniques. Regional variations in patient populations throw some "standards" out of whack,individuals throw emphasis into methods that give better responses by virtue of individual sensitivity and strength. Were we to allow ouirselves to be guided only by "evidence" as per the often used definition , we would fail our own creative selves as well as our patients. What ought to guide us at least as much is what works for us and is both safe and repeatable. I would rate myself in your one to ten scale as likely to use both 'evidence' and my own senses equally, scoring 5.