What evidence do you have for what you ate today but a year ago? If you don't have the evidence, nor do the 7 billion humans on earth (in terms of only one meal in life among today's humans on earth, not historically)
In reality evidence is a scarce thing. Humans don't rely on such a scarce thing to determine a truth. The nature of history is that it is the recording of 0.0000000000000000000000000000001% overall human activities, mostly reserved for famous figures and events. Out of the scarce amount of the recorded, only 0.00000000000000000000000000000001% of them can actually backed with evidence (if any).
That said. In a nutshell, you don't know what you are talking about!
It is actually out of humans capability to gather evidence, say about what you ate before, that they have to trust with faith on what have been written down (about what you ate that day by an eyewitness) to get to know what could possibly happen. That's how our history was written.
The next point is, how much humans understand catastrophes ever occurred? Using your science as a reference, within 4.5 billions of years how many kinds of catastrophes ever occurred? How many of them are known to humans?
Flood is just a human term used to describe a scenario, or else we may not be able to even write down the scenario. But is it really a flood? Since when you saw a flood covering the top of a mountain? It may be a catastrophe never made known to humans, which Noah had to describe it as a "flood" or else nothing can be written down.
The line of reasoning used in this thread is thus "because you can't present the evidence of what you ate in your life time, such that you can't claim that you ever ate anything". However plausible is your "logic"!
