ghosts and stuff are funny things.. I've experienced enough to know that there are things that happen which are outside the scope of "normal" that simply can't be explained away as ANYTHING. These events are usually lumped under the term "ghost happenings" but if anything, they should merely be considered supernatural.
For example, poltergeist activity is supposed to be a dead person moving stuff around.. really? someone decided a dead person must be doing that? I fail to see the connection, except in folklore, fairy tales, and fiction.
I usually don't share that view with folks, but that's kinda' my take on it.
I DO make the association with an "entity" sometimes, because it makes it easier to wrap my brain around. Such as a floating pitcher of water, dropped on the floor, associates easily with a sentient intelligence deciding to move something carefully and then just drop it when discovered. I'm careful though in an investigation, because assuming it's an entity can close your eyes to other options.
Who knows what that entity is though, or why it's there. I'll tell you a common thread though that runs through most of the "true stories" I've encountered; Look for the water.
Typically, an investigation will reveal that a "haunted" location is either very close to an underground water source, or a dried-up underground water source. I recognize that covers a lot of ground, but it would seem that there's theories developing regarding the ability to store visual information in dried water and certain types of wood.
It's suggested that these can replay segments of visual information, but there's nothing to suggest how it specifically works.
Even though the theory sort of limits itself to visual apparitions that don't react to the modern world, or any changes made since the recording was made, the common thread of water also extends to other types of "hauntings".
Personally, I've never experienced a visual haunting, where I saw an apparition.. but I've seen and/or heard things being moved around.
Other hauntings are things like voices on audio recordings.. those are neat, and I've run into some really cool ones, but EVP (Extra Voice Phenomenon) is too easily faked to be taken too seriously. However, if YOU control the conditions, and still end-up getting weird stuff, it's pretty damn cool... No one will ever beleive you didn't fake them yourself though. It's just a really neat "chill up your spine" moment.
"photo Orbs" well.. those have an interesting history, and I'm not into those. The other "ball lightning" orbs are pretty neat though. Some folks claim they've talked to them and seen it's movements seem to reflect answers, reactions, and/or moods. I'd love to be there for that.
Apparently, I missed a pretty good chance when I was invited to a retirement home in Tennessee to investigate some ball orbs witnessed repeatedly by staff members. They had ten witnesses to these orbs, in varying colors, going through walls, smoking and stuff, on a minimum of 17 separate events in various locations on the site. The only reason I didn't go was because the actual property owners were going to be away for a month, and had specifically told the staff that they wouldn't authorize an investigation. In other words, the staff was setting it up behind the backs of the owners, and that's not cool from a legal or moral standpoint.
Anyway, I agree with the concept of the law of physics applying to all of us, and indeed, likely the entire universe, etc. however.. I think there's still room for "undiscovered territory" where we still don't understand the specifics of the stuff around us enough to make an educated decision about whether something actually defies physics or not.
For example, everyone's probably seen a Jellyfish and how it moves in the water. Water is, (in terms of physics) not much different from vapor that is "heavy".. and many, if not all physic laws apply the same to each. Air is vapor. Balloons of helium rise, just as bubbles of air rise in the water, and indeed, rise due to the same conditions.
So how could it be physically impossible to have something that floats through the air the same way the jellyfish floats through the sea?
I understand water displacements, but what makes anyone so sure that the air displacements aren't a similar thing at a different scale? After all.. how could Fish and frogs be suspended in the air from a waterspout and dropped with rainfall miles away, rather than just rise and then straight-out fall as soon as it was free of the waterspout? It's easy to disbeleive that kind of thing, along with rare fire storms and fire tornados that burn in ways that really don't make much sense at all and were disbeleived until right around the time of the Chicago fire, an entire town was erased in a single night.
Physics, (prior to the evidence showing them to be a reality) would declare firestorms and fire stornados to be impossible, and yet it certainly happens and for some reason it took quite awhile to "discover" it. I don't beleive it's a "break" of physical laws, it's more of an exploration of what the physical laws REALLY are. We don't know it all at this point, despite what every generation beleives their generation knows.
The world's not flat anymore. I think most folks around in those days just assumed we KNEW it all back then, and it was flat.. that's the way things were and nothing was going to change that. The sun rose and fell in predictable ways, while the flat Earth just sat here. Their technology and research wasn't up to the task of determining it was round until the heretics and heathens managed to prove it in ways that seemed undeniable. Currently, we can't even prove that the Earth isn't the stationary center of the universe.. we can prove it to be UNLIKELY, but that's not quite the same thing... if it's moving.. how fast is it moving in relationship to a stationary point in the universe? There's no known stationary point in the universe, so there's nothing to measure it against, therefore it might be stationary.
Also.. one man's magic is another man's science. If I flicked a lighter in the 8th century, I'd have certainly been considered a supernatural being. There's not a soul alive back then that could figure out what I did, unless they had the lighter to tinker with.
Is time travel possible? not yet, to our understanding, but we HAVE figured out how to SLOW time in an controlled environment.. it would seem a logical progression, and defies all understandings of physics until you also realize that we discovered that time is a wave that can be partially blocked by ultra dense material. THEN it starts to make some sense and requires us to redefine all physics relating to time because time is no longer a "constant".
What's antimatter.. does it exist? Sure, it's been proven to exist. if so, why not anti-time waves, and weird stuff like that.. unlikely? sure, but conceptually possible, which is a better chance than the concept of trapping blinding light from the sun in small glass orbs that could be turned-off and on at whim,.. Krylon-bulbed Flashlights exist, and I'd imagine they'd have been described in that fashion by quite a few people throughout the ages.
I don't think we know nearly as much as we think we do. Much like the dark ages was probably full of folks that felt they had it all figured out.. We used science to pull us from the darkness and shed light on many subjects. ALL subjects? nope. We're still doing that today, and probably will continue to do so until our species disappears.