Back to the Future 2 lied! There is no flying cars,hoverboards, dehydrated pizzas,etc.

[drkohler]

Netyaroze said:
The hologram shark is also.possible and not far.away.

Just because Leia was talking through R2D2 to Luke doesn't really mean it is possible in reality.

Just throwing light into a room and hope it forms a 3D image, like a moving person or an attacking shark, isn't exactly holography.