this is called a a posteriori probability. based on some evidence, you are trying to estimate the likelyhood of the hypothesis.
the activities that take place to get ready for an event
Do you have your passes ready for the event?
Yes, everything is ready for the upcoming event.
A milestone event that dramatically accelerated the need for ready-made work clothes was the Gold Rush of 1848.
Yes, are you prepared and ready for the upcoming event?
Yes, do you have your pass ready for the event?
That was ready by 1892.
To get ready enough for some future event
Some phrases with the word "ready" include "ready or not," "ready to go," "get ready," and "ready for action." These expressions convey a sense of preparedness or anticipation for an upcoming event or situation. They are commonly used in both casual and formal contexts.
PREPARATION : the process of getting ready for an activity, event, or goal.
You don't locate it, it will come to you when it's ready.
'Prepare' means to get ready for an event of some kind.