7 tips on how to solve any problem
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00:00 Tip 1. About proof
05:00 Tip 2. Search non-existent
07:00 Tip 3. Set the conditions for arguments
10:20 Tip 4. Simplifying is more useful than it seems
13:58 Tip 5. Extremes can be useful
19:28 Tip 6. What if you're completely confused?
25:40 Tip 7. How to develop intuition