Physical evidence may be required for one person to prove provide evidence for their case to some other people, but it is not required for the person who had the firsthand experience ... for the person who observed the "physical evidence" in action.
Back to living in your own private Idaho, are you?
There's no such thing as individual realities, Mr Fology. There's just the one objective reality that we all share and it operates according to a single set of physical evidence.
You may not "require" that your personal reality be accepted as part of the community one, but as long as you keep insisting on its validity you're going to have to get used to being something of a target, especially if you're going to persist with your new hobby of parading your fantasy around here at Slings and Arrows 'R' Us.
But even if you insist that it does, then one's own memory still doesn't have to be perfect to know that what was observed was not a natural or manmade object or phenomenon.
One doesn't need a memory at all. One could just as easily make one's story up on the spot.
Without evidence, Mr Fology, it's just a story and whether you made it up five seconds or forty years ago it has exactly the same value.
Sheer accelleration, distance covered and repeated precise maneuvers are more than sufficient.
Stories about sheer acceleration (please note the spelling), distance covered and repeated precise maneuvers are a whole different kettle of space fishies. They suffice only to cast their narrator in a strange light.
Exact dates, times, positions of the moon, what music was playing, or precise measurements are not relevant.
Not if one is spinning a fairytale - Little Blue Riding Hood works as well as anything and who cares whether the witch in Hansel and Gretel lived in a butterscotch house or a barley sugar one?
But when one is claiming to present evidence that will require us all to reassess our position in the Universe then the devil is most definitely in the details.
ECREE, Mr Ufology.
For example whether an object has accellerated from zero to 10,000 or 20,000, or 25,000 Kmh in in about 1 second makes no difference to the basic question ... how is such a thing possible ... for anything, let alone anything manmade?
What matters is whether the object even existed in the first place.
No matter how many times you attempts to
gloss over barge straight through this point, it's not going to go away.
And if it is possible, do those circumstances fit the circumstances observed? Those who want to simply reject accounts that don't have explanations that fit what we know are certainly entitled to do that, but I'm more interested in hearing from people who have seen similar things and can offer explanations that fit the situation ...
You're only interested in hearing from people who have seen similar things and exclaimed "OMG . . . aliens!"
You are, quite simply, in the wrong forum.
... not explanations that require changing several aspects of the story ( e.g. fireflies ).
Are you at last beginning to see the problem with trying to use anecdotes (which is to say, claims) as evidence?