I would say so. A lot of people say it's really easy
I guess you're talking about the optical drive. I guess it wouldn't. Purely because the PS4 is programmed to have it in.
PS4 confirmed supports ExFat format (read & write) from USB Thumb Drive and USB External Hard Disk Drive - Tried it myself. Not an Xbox One owner, so not sure on that console, but it should be since it's using Win 8 as an OS...
No you will not be able to play the games either way. Systems changes on the PS4 allow them more design capability for games and many titles will be released in a downgraded PS3 version. You still will have to have a PS4 to play PS4 games and a PS3 to play PS3 games.
Because PS3 and PS4 are different consoles. If you have Minecraft PS3 and try inserting it to a PS4, it won't be able to load because it changes the features in the disc. You might need to sell your Minecraft for PS3 and use the money to buy it for PS4.
You cannot get Dark Souls for the PS4, but upcoming is an enhanced version of Dark Souls II called Dark Souls II: Scholar of the First Sin, which is for PS4, XBox One and as an upgrade to the existing PC version.
The may release some titles upgraded to play on PS4, but without an upgrade they will not work. The games would only be available as a download at the Playstation store just like some of the over 60 PS2 game titles that have been upgraded to work on a PS3
They do not make a PS4 and may never name a console the PS4
No
The lens is not something that might be easy for your cousin to touch and you have not said whether it is a PS3 PS4 PS2 and they arwe very different. Deal with what problem it has in your question. Does it power up. Does the disc move and get read. If your Playstation is not a PS3 or PS4 it's time for an upgrade anyway
The PS3 is about a third the speed of the PS4 Blu Ray, but the faster drive still might not be able to process the 100GB double layer discs needed for blu rays movies for the 4K Ultra HD TV
No, there has been no announcement of the PS4 yet.
PS4 definatly