I wasn't trying to be rude, I just find it insulting to my intelligence, where data issues which invalidate your backtests, pretty much given that a single failing point in wrong data can make your strategy have a +/- 20% in a single day especially when people are trading such strategies with VIX involved. To have my concerns or issues basically downplayed or completely ignored with irrelevant information. Such as talking to me about forward looking bias over a year later about past data.
A better answer such as yours was would of been better, such as we know about it.
Secondly, I quite don't understand why you can't preserve these data issues on another off production database, to still be able to run your diagnostics ect. and still provide proper working functionality for case 2?
Thirdly, until whatever decision you make there should be a banner or message on top of every thread, that there are issues with historical data, and you should verify the data, or import your own. Most people are probably under the impression that backtesting historical data is good enough, as I was up until I was made aware of these data discrepancies, I even traded live some strategies based on backtests, and I see people everyday trading strategies live, based on the conclusions from inaccurate backtests.
When you create a product, or service people usually put faith in you, that things work the way they should be, and given that you are in the financial field, you are dealing with people and real money, not my twitter doesn't work properly, wrong orders, wrong backtests, wrong data, negligence in any area can have significant monetary consequences for people.
Anyway thanks for a proper response. I hope you at least consider the advice of putting up warnings on the limitations on the current data structures.