[ngcc_hk]

The virus is real. How it spread and where it comes from is an important analysis needed. SARS seems from eating wild cat and they are not sold there (there after decade there are selling in that market still but not those type).

You learn. But so far due to the source is far away from more reliable scientific base (hk in 2003), no one knows. Hence one have to reconstruct.

These might be wrong but investigation is needed. “ For his contemporaries, the ideas presented by Copernicus were not markedly easier to use than the geocentric theory and did not produce more accurate predictions of planetary positions. ”

Let the river flow. Dead water you can step in twice is not good water.