What changes?
For English and Russian paragraphs, a left edge provides a consistent return point. Centered text works better for short passages than for many lines of explanation.
Use it in your work
Left-align article text; center a short invitation heading if its tone suits it.
A common mistake
Centering long paragraphs or justifying narrow text with large word gaps.
Context matters
Right-to-left scripts need a different starting edge; tables may align numbers differently.