  This paper revisits the controversy concerning whether gravitational lensing
effects make a significant difference to estimation of distance to the Cosmic
Microwave Background last scattering surface in cosmology. A recent paper by
Kaiser and Peacock supports a previous paper by Weinberg stating that such
affects average to zero because of energy conservation. In this note, problems
are pointed out in the Kaiser and Peacock analysis related to their choice of
endpoint of integration, and to the `wrinkly surface' argument.
