No one can know everything. Since the beginning of our live We learn from others. There is no point of feeling embarrassed while asking anything. At times, we fear asking things because we feel like it may sound silly but even the silly questions are worth asking. Something sounding silly may open up a new gateway of discoveries.
We, humans, cannot be succeeded by trial and error formula. We do not have enough time to waste in wrong attempts. That's why the experiences of others value a lot. However, we are not supposed to apply or follow 100% of others experience on our lives. Instead we are supposed to take the lesson and examine how certain thing may or may not be beneficial for us