Occasions may arise in which the solution for 𝚫𝚫𝐩𝐩 in Eq. 6 is inaccurate or unacceptable in a directional sense. Consequently, iterative changes in 𝚫𝚫𝐩𝐩 approach zero even though 𝛁𝛁𝛁𝛁 is clearly nonzero. We refer to this as algorithmic stalling. Stalling is a separate issue from a local minimum in that 𝛁𝛁𝛁𝛁 = 𝟎𝟎 in a local minimum. We find that simply sending 𝐩𝐩 to a random point