1. Ce este puterea 1...
https://www.youtube.com/watch?v=FpL6Fwu0wkw#t=39
...2. Ce este puterea 2
https://www.youtube.com/watch?v=ifaRhL95HUM#t=89
3. Ce sunt bancile
https://www.youtube.com/watch?v=XBXuSoeS2Q0#t=98
4. Ce este haosul
https://www.youtube.com/watch?v=PxlIraEV8n4#t=103
