Here's a breakdown of its meaning:
* "Maybe" indicates a lack of certainty or a possibility.
* "So" affirms the idea being presented.
Therefore, "maybe so" can be used to express:
* A cautious agreement: "Do you think it's going to rain?" "Maybe so. The clouds are looking pretty dark."
* A hesitant acceptance: "You should apply for that job." "Maybe so, but I'm not sure I'm qualified."
* A polite way to disagree without being confrontational: "You think this is a good idea?" "Maybe so, but I have some concerns."
In essence, "maybe so" acknowledges the possibility of something being true while leaving room for doubt or alternative perspectives.