We don’t even know what we lost!🔗

It can be easily understood by the following example. Aryabhata, one of the pioneers in the field of mathematics and astronomy is from that era. Aryabhata’s value for the length of the sidereal year at 365 days 6 hours 12 minutes 30 seconds is only 3 minutes 20 seconds longer than the modern scientific value of 365 days 6 hours 9 minutes 10 seconds.