While these prepositions are effectively the same, there is a slight semantic difference between them. Compare: Я думаю об очках Я думаю про очки I...

There is a couple of cases when the difference between the two words is significant. Читать про себя vs. читать о себе . The first one can mean b...

I think "про" implies certain narrative or a certain concrete thought. Я думала о тебе - I thought about you Я думала про тебя, что ты алкоголик -...

In your examples both "про" and "o" sound quite right. I think it's a question of style than grammar. Personally, I would go with "o" in these exam...

Про is more related to some facts while о is more descriptive: Ты правильно сказал про русский язык. This refers to a particular fact about Russ...

Generally, either о/об or про is fine. Про is considered to be marginally colloquial, whereas о/об is more formal. Some people may perceivi...

I am a native Russian speaker, and I've struggled to understand the difference between these prepositions and scope of their usage as well. It seem...

A side note. О / об might be a bit more formal, compare with typical titles of scholary works: "О корчевании корней ", "К вопросу о корчевании...

I think, that there is still small difference between usage of о and про To generalize: I use о , when describe some general properties of the...