Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too Obscure for Me

I got this book for my husband because he is reconsidering his religious faith and I thought it would be about agnosticism. It is, instead, a HIGHLY technical treatise about I don't know what, inaccessible to me (and I assume to my husband, though I sent it back before he even saw it). It made no sense to me at all. I don't know what kind of audience it's for--mathematicians? scientists of some sort? But not the lay reader, that's for sure. I would have wanted this to be made clear before I bought it.