A computer compares data fragments to carry out processes, and then responds to the comparison's findings with programmed actions. Is giving an explanation reasonable?

Only need the given directions, no need for extra code. Thank you!

Computer Science Scenario: Suppose you were to let your friend use your computer for a couple of hours in order for them to complete their homework assignments. What kind of precautions would you take before letting them use your computer? In those precautions, what is the logic behind your reasoning? How would your precautions change if this computer was being used by the general public instead?

How was telephone interface technology designed in early 1900's to suit the process being undertaken using the technology available at the time? Was there any evidence that an attempt was made to understand how human cognition and behaviour might influence the design of that technology?