Is exchanging anecdotal evidence a substitute for good scientific argument? My father died of the flu. A friend of my mother's sister died 10 minutes after tak

Is exchanging anecdotal evidence a substitute for good scientific argument? My father died of the flu. A friend of my mother's sister died 10 minutes after taking the Covid vaccine. I don't know anyone who died from Covid but I know that of course it's happening. My anecdote doesn't add anything to the discussion but then again, neither does yours.