Does the development of the navel center occur separately from the growth of the heart and head centers, or do they develop simultaneously?

According to Osho, the navel center does not develop alongside the heart and head; it is already complete and must be uncovered, while the heart (love, sensitivity) and head (reason) are gradual developments shaped by culture and practice. Techniques therefore differ: cultivate emotion and reason, but turn inwardly to discover the ever-present navel center—the ground of buddhahood and equal being.