Pseudo-randomness refers to sequences of numbers that appear random but are generated by a deterministic process. These sequences are produced using algorithms, often called pseudo-random number generators (PRNGs), which take an initial value, known as a seed, to create a series of numbers that mimic the properties of true randomness. While pseudo-random numbers are useful in various applications, such as computer simulations and cryptography, they are not truly random because they can be reproduced if the seed and algorithm are known. This predictability is a key distinction between pseudo-randomness and true randomness, which is inherently unpredictable.