  We draw attention to two unanswered questions in radio pulsars' theory. The
first one concerns the inclination angles between magnetic and rotation axes.
We show that the very existence of interpulse pulsars indicates that all
possible angles are realized. The second one is the question of the break of
the death line on the PPdot-diagram. We show that this break can be easily
explained by a very mechanism of secondary plasma generation.
