Hızlı yanıt: kod örneği
They are valid but not interchangeable. I think the most important difference is that "in the beginning" seems to be an expression describing a whole period of time, while "at the beginning" more literally describes a single moment in time, similar to the difference between saying "in the morning" and "at 8 a.m."Compare your question to "in the end" versus "at the end." "In the end" is an idiom synonymous with "ultimately." There's a clear distinction. I think the same can be said for "in the beginning"/"at the beginning."