Why did this fail to achieve HQ?

[Jojoya]

It's RNG. Unless you get it to 100%, there's no guarantee you're going to get HQ.

One thing people need to keep in mind. Random number generators aren't truly random. If bad seeds are used, results may not fall in line with what's stated while the bad seed is active. It's more annoyance than anything else in a game like this, where there's usually another chance to get the result desired, but it can be very frustrating.

[tdb]

One thing people need to keep in mind. Random number generators aren't truly random. If bad seeds are used, results may not fall in line with what's stated while the bad seed is active. It's more annoyance than anything else in a game like this, where there's usually another chance to get the result desired, but it can be very frustrating.

On the other hand the human mind tries very hard to see order in chaos. If a coin comes up heads five times in a row, a human will think "this is not random" even though there's a roughly 3% chance of that sequence occurring randomly. Out of all possible sequences, a significant portion is perceived as "non-random".

In fact games probably shouldn't aim for true randomness. Instead they should tweak their RNG output to preserve the expected odds and the satisfaction of beating the odds, but avoid overly long streaks of bad luck. It does require some care to prevent exploiting the system though.