Hierarchy of Needs

 Our Needs Fight For The Dominance in Our Lives
There many interesting tendencies young Abraham Maslow noticed while he worked with monkeys during his carrier. He noted that some need take presidence over the other, and there is a defined hierarchy between things animals feared or wanted. He supposed, humans react the same way and after many years have produced his innovative and paradigm changing work: the Hierarchy of Needs. Hunger is a strong need, but thirst is stronger; the same applies to our sexual desires and desire to be respected. One force prevails over the other and there is a precise order dictating what we will do first if we are hungry and ambitious at the same time. What a simple idea! But Maslow managed to take it to the level where the world of science have acknowledged it as law.
Reference: Wikipedia

String Theory

The String Theory is Not that Mystical at All 

Inventors of String theory struggled for decades with an idea everyone else refused to believe in - the belief that all matter is comprised of collection of particles having no physical properties. Conventional science was and is still largely convinced that every smallest unit of matter in the Universe is a point particle, represented by a precise location at any point in time, having identifiable physical shape. String theory, however, claims that what we originally thought were solid particles, in reality are the strings of pure energy. Miniature vibrating strings of energy, closing into a little circle or with loose end points. There is nothing really mystical in that theory. One of the greatest advantages of string theory is its versatility. The idea caught on in mid 1980s and scientists started jumping on String Theory band wagon...

References: NOVA, University of Pansylvania, Burt Ovrut.