This is my first post, here. yep- I'm new.... well, actually, I've been used before... (sorry). As I 'get the hang' of this forum, and those who haunt it (pun intended)... let me just say that if I'm repeating or bouncing something which has already been discussed to death, or that has been brought up after the post I'm about to quote and discuss... forgive me.
Anyway... here we go:
A memory stick does not show anything, i can take a picture, edit it the way i want to, and put it back onto the memory stick. But the pictures themselves show something. When you take a picture with a digital camera, the exact date and time of the shutter-release are recorded to your image file, along with many other bits of "meta data." and every time you take a picture, your camera will also save information about your exposure time, f-stop setting, ISO, focal length, and so on.
The time and date stamp on a digital still, video camera, or for that matter, the time and date set in a computer, can be altered... then the photo/video/audio-file... whatever- can be taken (or created/saved).... then, the time and date can be reset so that's it's correct... and that's how one can easily get around the time/date stamp on a digital photo or other media. Same is true when creating files on a computer... change the clock/date... save the created work... then change the time/date back.
Someone earlier said something about being able to varify files against a person's computer files... well yeah... but which computer? With enough 'know-how', any kind of security can be gotten around.
Now I'm no expert... but data retreival on a computer drive can be done a lot of the time (esp. if you just click "delete"... but my understanding is that if the drive has been formatted (wiped clean)... there's literally nothing left to restore... it's like 'new'. One could then reload certain files... or all files, except whatever you want to be seen as 'never having been there'... and it'll look normal.
Again... I could be missing something... but- I have done this with photo files, and with audio/video files (checking to see how valid time/date stamps actually are, for my own copyright purposes). And my computer/network tech has demonstrated this to me, and claims he (or anyone who knows) can do just about anything with a computer drive.
Concerning photos (either digital or analog (film))... what I've read here so far, is addressing 'photoshop-type' alterations for the purpose of producing fakes. Has anyone brought up the old photographic effect from the 1800's (I can't think of the name at the moment), whereby a sheet of glass if placed in front of the lens at a 45-degree angle... and by controlling the lighting conditions, a fully transparent, ghost-like image can be produced? (The main subject 'a' is directly in front of the camera... the secondary 'ghost' subject 'b' is placed 90-degrees off-axis, in a darkened area. When the light-level on the 'b' subject is brought up, it produces the transparent image of 'b' on top of the 'a' subject). I wish I could think of the name of this fairly common effect... it's like "something's-ghost"... like (to just use a name) "Fletcher's Ghost". I think it was named for the 19th century photographer who first did it, whatever the actual name for it is.
Anyway- the point is... there's more 'old-school' methods of performing trickery, which many 'computer-generation' people may not even be aware of. And some of these methods, when done well, are dang-hard to detect, especially since, in recent years, so many 'skeptics' have been on TV shows, showing how they're done... and more- what gives them away.
I started 'investigating' paranormal stuff, mainly for my own 'piece of mind', after a couple of personal experiences, which science just could not explain. In my 'exploration', I went to Waverly Hills Sanatorium on an investigation. I wasn't expecting to see, hear, or experience anything... and the group I was with were all very well manered... no joking around... everyone pretty seroius. I was disappointed when I left... kinda hoping to have had something... anything happen. When I got home, I started reviewing all of the video, photos, and audio. I captured nothing on video or still photos... but the audio... there were three EVP's which astounded me. Two of those were of a very loud child, making bored 'kid noises' like "OoooOOoooOoooooohhhhh".... over and over. And these were in the midst of our group walking and talking... and no one heard anything like this... and on the tape, it's so loud, it's down-right freaky.... I mean, it's not an 'iffy' thing at all. Now- I don't expect anyone to believe it... to take my word for it. I would only believe it myself, if I were actually there, and experienced it. But that's just it... I was there, and DID experience it... first hand.
So- to agree with all of you who have said that ya really can't provide proof... you really can't. If you wanna convince someone, they just about have to experience it, first-hand. But- if you don't at least try by continuing the attempt, you'll never capture anything.
Ok... I'll shut up now... and sorry to have 'run long', or stepped on toes.