In quantum mechanics, Schrödinger's cat is an experiment which illustrates a paradox of quantum superposition: a cat may be considered simultaneously both alive and dead as a result of being linked to a random subatomic event that may or may not occur.
In summary, you do not know if the cat is dead or alive until you have opened the box. But once you have opened it, you still do not know if the cat was dead or alive before opening, because the opening of the box may have changed the state of the cat (physicists assume that the cat can resuscitate...).
I think most of the cryptos are Schrödinger's coins: until you have bought them, you never know if they are good or bad coins, and once you have bought them, you can still wonder if they have not become good only because some other guys have bought them too.
Let's take a concrete example: DOGE was supposed to be a joke coin till last week, and now that it has pumped (many thanks to Elon), it is at worst a funny pumping coin. Does it mean you should buy it? Nothing is more uncertain. It might dump as soon as you have bought it. Like the Schrödinger's cat who dies as soon as you open the box.
So, what is the best strategy? It depends if you want to follow the move and make small profits every day by buying when it pumps and selling when it dumps, or if you want to bet on the long term by selecting only solid projects. Patience is key in crypto. Do not be desperate if the nice coin you have chosen does not pump like some other ones. If the project is solid, its turn will come, and it will be magic.