Yes, we didn't write about these scientific breakthroughs, hence we lost the knowledge. I think that in those days, knowledge passed orally, from father to son and teacher to disciple. A war or some deadly epidemic, such as the plague or malaria, could disrupt that knowledge transfer. Hence, we lost all our knowledge. But we all know that in the Kandyan era, those kings prohibited building roads; hence, isolation became even worse.We definitely had an elegant understanding of geometrical methods and numerical operations for without them stupas and irrigation projects would have been impossible. I don't understand why we did not care enough to write them down. Then again most vedic mathematical texts from the first millenium BC have been passed down by means of oral tradition and only put to manuscript form in later AD years.
Recording your methodology is key otherwise your genius is squandered. Think about what we couod have known had Egyptians documented their engineering acumen. This is where Indians come to the top- being men of words and letters they memorised and later wrote almost everything exhaustively.
At least we cared enough to document our origin myth. Let's be glad about that.
ස්ථානීය අගය රහිතව දහයේ ගුණාකාර සංකල්පය ඇවිත් තියෙනවා. ඒ කියන්නේ 10,20,30,....100,200,300,....1000,2000,.. ආදිය සඳහා වෙනස් සංකේත. මේ ක්රමය අසාර්ථක ක්රමයක් ලොකු සංඛ්යා සඳහා සහ දශම සංඛ්යා සඳහා.මේ තියෙන විධියට සිංහලෙත් සංඛ්යා ලියනකොට දහයේ ගුණාකාර පාවිච්චි වෙලා තියෙනවා
පනස් හය ට්රිලියන, හත්සිය අසූ නව ට්රිලියන, දෙසිය හතළිස් හතර මිලියන, අටලක්ෂ අනූදහස්, හත්සිය හතළිස් පහGon part ban mata number eka kauruhari sinhalsne kiyapn
56,789,244,890,745
nah(Numbers read karannda English vithrai use karannda ona)
56,789,244,890,745
පනස් හය ට්රිලියන, හත්සිය අසූ නව ට්රිලියන, දෙසිය හතළිස් හතර මිලියන, අටලක්ෂ අනූදහස්, හත්සිය හතළිස් පහ