Checking the datatype is not the same as validating. There is lots of data out there that is invalid, and yet still has the correct type. In fact, that is the common case.
I dare say you will be hard pressed to find a dataset of significant size that doesn't have at least one invalid entry somewhere. Increasingly strict type rules will not fix that.
I dare say you will be hard pressed to find a dataset of significant size that doesn't have at least one invalid entry somewhere. Increasingly strict type rules will not fix that.