A Quote by Paul Dirac
No. I had successfully solved the difficulty of finding a description of the electron which was consistent with both relativity and quantum mechanics. Of course, when you solve one difficulty, other new difficulties arise. You then try to sove them. You can never solve all difficulties at once.
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And then there are difficulties. Computers are famous for difficulties. A difficulty is just a blockage from progress. You have to try a lot of things. When you finally find what works, it doesn't tell you a thing. It won't be the same tomorrow. Getting the computer to work is so often dealing with difficulties.
String theory is the most developed theory with the capacity to unite general relativity and quantum mechanics in a consistent manner. I do believe the universe is consistent, and therefore I do believe that general relativity and quantum mechanics should be put together in a manner that makes sense.
Science has not solved difficulties, only shifted the points of difficulty.
There were several possible solutions of the difficulty of classical electrodynamics, any one of which might serve as a good starting point to the solution of the difficulties of quantum electrodynamics.
Can quantum mechanics represent the fact that an electron finds itself approximately in a given place and that it moves approximately with a given velocity, and can we make these approximations so close that they do not cause experimental difficulties?
In quantum mechanics there is A causing B. The equations do not stand outside that usual paradigm of physics. The real issue is that the kinds of things you predict in quantum mechanics are different from the kinds of things you predict using general relativity. Quantum mechanics, that big, new, spectacular remarkable idea is that you only predict probabilities, the likelihood of one outcome or another. That's the new idea.
It is through solving problems correctly that we grow spiritually. We are never given a burden unless we have the capacity to overcome it. If a great problem is set before you, this merely indicates that you have the great inner strength to solve a great problem. There is never really anything to be discouraged about, because difficulties are opportunities for inner growth, and the greater the difficulty the greater the opportunity for growth.
The worst possible thing ... was to lie dead in the water with any problem. Solve it, solve it quickly ... If you solved it wrong, it would come back and slap you in the face, and then you could solve it right.
What is work? Work is struggle. There are difficulties and problems in those places for us to overcome and solve. We go there to work and struggle to overcome these difficulties. A good comrade is one who is more eager to go where the difficulties are greater.
Added to the difficulty of learning to speak the language was the greater difficulty of finding terms to express the ideas which the missionary had come halfway round the world to convey.
It seems sensible to discard all hope of observing hitherto unobservable quantities, such as the position and period of the electron... Instead it seems more reasonable to try to establish a theoretical quantum mechanics, analogous to classical mechanics, but in which only relations between observable quantities occur.
The basic idea is to shove all fundamental difficulties onto the neutron and to do quantum mechanics in the nucleus.
Quantum field theory, which was born just fifty years ago from the marriage of quantum mechanics with relativity, is a beautiful but not very robust child.
Never carry things on from the past. The past is gone. Every moment be rid of it, solved or unsolved. Drop it - and don't carry parts because those parts won't allow you to solve new problems that live in this moment. Live in this moment as totally as possible, and suddenly you will come to realized, that if you live it totally, it is solved. There is no need to solve it. Life is not a problem to be solved, it's a mystery to be lived.
Every problem is super-interesting and has its own nuances, and you solve it today, but you try to solve it with an architecture. You build a machine to solve the problems that are like it later. And then you move on to the next.
The comrades throughout the Party must take all this fully into account and be prepared to overcome all difficulties with an indomitable will and in a planned way. The reactionary forces and we both have difficulties. But the difficulties of the reactionary forces are insurmountable because they are forces on the verge of death and have no future. Our difficulties can be overcome because we are new and rising forces and have a bright future.
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