Knowledge work outsourced out of timezone by more than 4-5 hours is slow. At least 2x as slow, all things being equal. The communication and management overhead

Knowledge work outsourced out of timezone by more than 4-5 hours is slow. At least 2x as slow, all things being equal. The communication and management overhead is significant to the point where at least an 80% reduction in cost, if not more, would be required, IMHO, to be worth the investment risks outside of the HQ tz.