"Scientific" is opposed to "idealistic" in the Marxian traditions. It opposes anarchism and social reformists. It is scientific because it seeks to understand the root causes of all major human historical events that passed and those that have yet to happen. And until now, history gave reason to Historical and Dialectical Materialism, which are respectively the scientific and philosophical pillars of Marxism.

Regarding the markets, considering their ever growing export sector, I wouldn't worry too much for now ;)