A quality control engineer sets up an acceptable tolerance range using a compound inequality connected by the word "or". When graphing the solutions to the two individual inequalities, the engineer notices that the shaded regions completely cover the entire number line. Because every possible number satisfies at least one of the inequalities, what is the solution set expressed in interval notation?

In a quality assurance process, if a compound inequality connected by the word 'or' has a solution graph where the individual shaded regions completely cover the entire number line, the solution set is expressed in interval notation as $(-\infty, \infty)$.

A safety engineer is documenting the operating conditions for a backup power system. They define two safe temperature ranges joined by the word 'or' and observe that the combined shaded regions cover every point on the number line. Match each part of their documentation with the correct mathematical term or notation.

Interval Notation for Comprehensive Range Solutions

A logistics coordinator is configuring an automated tracking system that triggers an alert if a shipment's weight falls within a range defined by two overlapping conditions connected by the word 'or'. After graphing these conditions, the coordinator finds that the union of the solutions covers the entire number line. To represent this 'all real numbers' solution in the system's configuration file using standard interval notation, the coordinator should enter ____.