In an appearance at the Berlin Film Festival, The Rolling Stones' frontman, Mick Jagger, in speaking about the troubled singers Amy Winehouse and Pete Doherty, said that times were different. Jagger said: "When we were experimenting with drugs, little was known about the effects. In our time there were no rehab centers like today. Anyway, I did not know about them." Jagger said he couldn't understand how the younger generation, knowing the dangers of drugs, could still be users.