I need to worry about signs. This is done in Seidel's book, thank goodness. At least I know if I try hard enough, I can understand it.

What is orientation? it is not a framing, but just an element in the top exterior power of the tangent space. Or, equivalently, top ext of the cotangent space.

In Morse theory, suppose we have a downward gradient flow from $p$ to $q$, of index $1$, then, if we insert the downward flow tangent vector into the top ext form of negative eigenspace at $p$, we get the negative eigenspace at $q$.

In Floer theory, the downward flowing manifold has too high a dimension. What does the orientation space of an intersection mean? And how does $A_\infty$ operations relates them?