@horseface @cadey very short TLDR. Unused RAM memory is likely randomized (like an etch-a-sketch with a bunch of random scribbles), or might sometimes contain remains of data from the last program which used that section of the RAM (rare but can happen). When programs claim a piece of memory to use it is supposed to be overwritten with all zeroes (blank slate). If you read from it before that you'll get that random data instead, which is usually not what you wanted.