I thought Zen Buddhists pondered unanswerable questions, like what is the sound of one hand clapping.
I'm not too familiar with Zen, but questions like these are often meant to be nonsense questions with no answer. They push you to think harder and harder until you realize the futility of doing so, at which point you've found the "real" answer.
I now use restic and I'm very happy. I find it to be very resilient. No more database, only indexes and data packs, which can be repaired.