#Fundamental #laws of the #universe :
#Gravitation is universal.
#Mass and #energy are interchangeable.
The #speed of #light cannot be exceeded.
And a person who buys a 3D printer will eventually buy another #3D #printer.
#fundamental #laws #universe #Gravitation #mass #energy #speed #light #3d #printer #stopme #3dprinter #3dprinting