He was “mentoring” me, but he really was an opportunist, a cyberpath, an extreme narcissist. He dumped me, and I've finally kicked his influence.

Our family used to be well off; now we're very badly off.

Instead, mispicks, i.e. large picking errors that occur when ambiguities exist in recognizing the first arrival among multiple events, are expected to produce local artefacts in the final velocity map.

Also we changed our method of blowing to eliminate misblows.