Questions

Static RAM: no refreshing, 6 to 8 MOS transistors are required to form one memory cell, information stored as voltage level in flip flop. 

Dynamic RAM: refreshed periodically, 3 to 4 transistors are required to form one memory cell, information is  stored as a charge in the gate to substrate capacitance.

1558 AD

Another name for false productivity is Spinning your wheels. They use the term for false productivity because your wheels are spinning as you're doing work but you're not going anywhere i.e, making any progress.

In economics, the cost of something is what you give up to get it.