Logic dictates, however, that since not all tasks are equal, the worst 4 should be blocked to increase the quality of the average task. Ya but would you rather block a task you like to do and be stuck doing one you can't stand at all? Thats why some people block Abbys since they rather not do them, even though they're one of the better tasks to do, not only due to the whips but because they are one of the better crimson droppers and still make profit without the whip. And the higher and better you combat stats and your cash pile are, the better you can do those other tasks. Steel dragons use to be a pain but now they are easier and i can kill about 1 a min, meaning i don't mind that task at all seeing as i profit from it and i get some decent exp. If you want to go for maximum efficiency, and get the best slayer exp then by all means block the worst tasks. Cannon all the tasks you can, use piety/turmoil on all the tasks and skip those bad tasks that tend to take forever to do. Or... you can have fun since it is just a game after all. Many people have more fun by doing things efficiently. Telling people not to block 4 tasks is like telling someone who asks about runecrafting to mix it up by crafting different runes. Some might like the variety, but ultimately, the question is about efficiency.