In my area (europe) doubling rate is between 2,3d and 3d. But the epidemic is "fresh", a little over 1000 cases identified, less than 10 dead.
The time the virus persists on surfaces is about 14 days, evidences of up to 27 days are researched. No details on environment given, so the virus may persist in dark places with optimal environment temperature and humidity and on certain type of surface much longer than outdoors in direct sunlight. Main infection pathway is inhaling contaminated droplets (wear mask) and direct contact with the receiver's mucosa (wash your hands, don't touch your face, wear googles, take frequent showers).
Incubation time is definitely discussed and researched to be 3 in between 14 days, whereas details come out sparingly and only kind of confirmed by statistics, contact tracing etc. Results vary. So both of you are right on this, imho.
C'mon! Nobody would use a bioweapon that infects the whole planet. That's like actually using nuclear weapons, which makes absolutely no sense.
Yeah because humans have never purposely depopulated or perpetrated genocide on tens or hundreds of millions of people before right? You also assume their goal isn't to cause total economic breakdown. There are a lot of people getting FILTHY rich off of this crisis, let alone the amount of control this is giving governments all over the world an excuse to take. The CCP LOVES this outbreak. Now they have an excuse to lock down the whole nation, stop any dissidents, and round them up for "quarantine" never to be seen again.
You can not project the past onto the future. This is why TA is failing more than occasionally, by the way.
Also, for example, just because aliens may exist (because not proven otherwise) does not mean they are actually existing.
This is a reverse approach to science, and we have science for a reason. Science proves knowledge through falsification. Most people get that wrong and confuse science with research.
