Comment by pxtail

You hired a house cleaner, you told him everything he needs to know, he did a good job. Next time unfortunately he arrives with broken vacuum cleaner, he has another one, smaller, less powerful takes him longer to do the job but it's still done, not spotless but it's fine, he is a nice guy, has good attitude. Another time and he arrives with faulty steam cleaner, again , work is done but takes longer, not ideal outcome. This is happening again and again, he even asks you sometimes to wiggle the cord, push some buttons and try to troubleshot, you know, improving the vendor and stuff.