Since the distinction is of decision theoretical relevance and the source of much confusion I choose to clarify incorrect usages of 'unpredictable' in this particular environment. By phrasing it as 'more precisely' I leave plenty of scope for the original speaker to be assumed to be just speaking loosely.

Unfortunately you chose to fortify and defend an incorrect position instead of allowing the additional detail. Now you have given a very nice definition of 'you' but even with that definition both of your claims are just as incorrect as when they started. Fixing 'you' misses the point.

You are probably too entrenched in your position to work with but for anyone else who wants to talk about 'unpredictable' quantum coins, qualifiers like ("for most intents and purposes", "effectively") are awesome!