The reach of DDD was limited due to the inefficiency and expense of switching equipment, and the limited ability to process records of completed calls.
Claims for priority of invention are difficult to resolve due to subsequent historic interpretations, secrecy, espionage, and international commercial interest.
Unfortunately, when the capsule was pivoted to its stowing position behind the cockpit, it made it impossible to kayak roll due to being filled with water like a bucket.
The parameters of photon transport, including the step size and deflection angle due to scattering, are determined by random sampling from probability distributions.
