That still counts as timing the market and is Known to be ineffective. What if the market doesn't tank and you sit in cash for a long time? If it does tank, how

That still counts as timing the market and is Known to be ineffective. What if the market doesn't tank and you sit in cash for a long time? If it does tank, how will you know when is the true bottom for you to invest your last 10% in? Etc.