> seller should modulate buying ads with a random stream of bits, such that the impulse response (of linearized approximation in tangent space for sales / adver

> seller should modulate buying ads with a random stream of bits, such that the impulse response (of linearized approximation in tangent space for sales / advertising dollar) can be estimated Could you unpack this a bit? (I'm not making a point or anything, just confused and curious and not sure that googling would help me understand.)