31. The circulation of " Three Body Problem " is more than seven hundred thousand. 32. This reduces any multi-body problem into an effective one-body problem. 33. This changes the three-body problem into a restricted two-body problem. 34. But no exact closed analytical form could be found for the three body problem . 35. I'm wondering : Why are many-body problems so difficult? 36. The big new idea he presents is that the old mind-body problem has been solved. 37. It is difficult to solve this many-body problem explicitly in either classical or quantum mechanics. 38. Likewise in philosophy of mind Lipton researched notions of mental content and the mind-body problem . 39. These issues relate to the so-called Quantum mind-body problem . 40. Even the two-body problem becomes insoluble if one of the bodies is irregular in shape.
