All the sins of Polish parents - Prof. Mariusz Jędrzejko

Jędrzejko emphasizes that he never says not to use technology – 'digital technologies are absolutely fantastic', but they must be dosed adequately to psychosomatic development. Therefore, under 3 years of age, zero screens – not because cartoons are bad, but because the brain has not yet developed neural networks. In the 4–6 age range, an analogy to 'how many cartoons did you watch – 10 minutes a day'. The 8:00 PM and 9:30 PM boundary is taken from scientific evidence. He says: 'We have gone stupid, (...) we believe all the shamans of the cyberworld'. He also appeals for parental control: dad has the right to 'enter his room on Facebook, Instagram, Discord', because until the age of 18, he is responsible for the child.

The professor refers to the movie *Cast Away*, where Tom Hanks paints a face on a ball to talk to it – because conversation has been a basic human need for 300-400 thousand years, since Homo sapiens emerged from Africa in a herd. By the fire (orange-red light), people looked into each other's eyes. Today at the table, everyone looks at their smartphone – this is a denial of evolution. He describes an experiment from Grzybowska Street in Warsaw – in every café, a smartphone lay 'in front of every person'. He leaves his own phone in the car.

The professor argues that chronic sleep deprivation (an 18-year-old sleeps 2 hours too little, a 15-year-old girl sleeps 2 hours too little) shortens life and impairs neurological development. Today's children in 10–15 years will become parents staring at screens, incapable of building lasting relationships. They will postpone fatherhood and motherhood – or give it up entirely. 'The end result will be that we will have even fewer children, and without children, you will have no pension, because I have a pension thanks to your work' – he closes this causal loop.