I view people like him like large satellites or small planets that have been crashing through everything mindlessly and creating this wake of wreckage. The only way to keep going is to not look back, or in this framing, not look in.

In single-minded pursuit of a simple goal and with early success they reduce their own humanity so that their repeated actions can maintain their simple function.

Looking anywhere behind/within has become so overwhelming and so painful they will construct elaborate narrative and even engage in medical assistance (eg ketamine) to avoid the consequences of integration.