Saber vs. Conocer | SpanishDictionary. com no saber ni papa de algo: to not know the first thing about something: que yo sepa: as far as I know: para que lo sepas: just so you know ¡qué sé yo! how should I know! sin saberlo yo: without my knowledge: vete a saber: your guess is as good as mine: a saber: who knows: de haberlo sabido: if I’d only known