The first is that we don't actually read the future when we are reading anything be that a person’s energy, tarot cards, astrology or through any other means of divination. The second is that everyone has free will and is free to choose a different path to the one that may be read while using divination. The last is that any divination is all up to the individual’s interpretation as to what is read from something and that is incredibly personal and likely to not be repeated by the next person along. All of this means that telling someone accurately what will happen to them in the future is not possible.
What we can do is look at the events that have led up to someone asking for a reading and what the reading is telling us to describe a likely outcome given the evidence in front of us within the symbology of the divination method. This will give us a good – possibly accurate - guess at a possible outcome if the person is to keep on being themselves and doing things in their usual way. However, if they act in ways which may drastically alter whatever is seen in the reading then the outcome might well be very different to what might have been described.
I would add that there are those rare individuals who do have the skill of foresight in this manner and might well be able to connect well enough to see what possible path you might have and the outcomes of that path. Usually though most people use methods of divination to find the possible answers to specific questions for those who haven’t learned how or have no wish to for whatever reason.
I hope this answers your question,