Identify bugs

- When an application is built perfectly, … there will be no bugs. … But as we know, humans are error-prone, … and there's no such thing as a perfect software application. … Bugs are inevitable. … They occur when the system does not work as designed … or specified, and result in incorrect … or unexpected behavior in an application. … when Grace Hopper was working on a relay calculator … and operations were not completing … because a moth was physically stuck in the computer. … Removing the moth fixed the problems … and operations started completing successfully again. … Examples of bugs can be when a vending machine … gives the wrong item. … Perhaps I selected A5 but the item from B5 … was dispensed instead. … Or even worse, nothing dispenses at all. … Another example of a bug can be … when an ecommerce website does not calculate … the right sales tax or total. … Bugs are versatile. … They can be low impact or high impact, … they can affect many users or just a handful of users, … they can be constantly reproducible or not, …