Video. The same part of the brain is stimulated by smartphone/screen play as by drugs. The same addictive effects are observed. 10/11 year old kids spend eight hours a day in front of screens playing. Silicon Valley execs send their kids to non-tech Waldorf schools to keep them away from what they know to be harmful addiction. Be smart. Keep your kids away from so-called Smart technology.
France is banning all mobile/electronic devices in schools.