I was reading some books containing an anthology of Ajahn Chah's Dhamma Talks to both laymen and monks. In the introduction of one of those books, the translator indicated that AC used to translate 'anicca' as 'uncertainty', mainly because, to his eyes, "impermanence" seems too abstract wjen compared to the former translation; we can all relate to the experience of uncertainty, which one can say is the manifestation of impermanence in our daily lives.
While I agree that 'uncertainty' is an specially useful translation, even more when considering the target audience (laymen, unacquainted with buddhist terminology), I'm confused about the accuracy of such rendering when trying to stick to the canonical teachings.
What did the Buddha told about the relation between impermanence and uncertainty?
If we're to believe the texts literally, there are multiple occasions when the Buddha was able to see into future of some individuals. Does that tell us that life may seem uncertain only most people, to those who don't possess such gifts and abilities, but that in the end, reality is "fixed" and already determined? Is reality and future events actually uncertain?
Thanks in advance for your time and patience!