No files, but there are memes. To whom (no) is the presidential debate profitable?

- I'm sorry. Those who have the most to lose do not come, says the political scientist Prof. Szymon Ossowski from Adam Mickiewicz University in Poznań. We are wondering what lessons come from past presidential debates and faults, including Lech Wałęsa, Jarosław Kaczyński and Bronisław Komorowski.