You keep blindly asserting this. I keep pointing out that computers are capable of doing things like navigating 3D space with which they are unfamiliar, including moving obstacles, on the fly and with no user input. Are you really telling me no decisions are made there?
Not by the computer. Input may derive from previous calculations but those calculations are based on prior programming. A computer can't ask "What if...?" and postulate a response. It does what it is told until it can't do it any longer.
A human is capable of attempting anything they choose, yes, but the very things they may or may not choose - or even conceive of - are limited by their psychology and brain chemistry. How many people in this thread do you think could murder a stranger in cold blood?
Even humans with limited mental ability are not static. The may be limited at this moment by psychology and brain chemistry and even experience, education, sight, hearing, smell, taste, sensory input, current state of inebriation or influence of medication or drugs, the temperature, time of day, the amount of sleep they had the night before, what they had for breakfast, an argument with an SO, boss, parent or child, when their birthday falls, the last conversation they had, if they have enough money to pay their bills, an allergic reaction to something in nature, the toe they stubbed getting out of bed, the fact their dog chewed the morning paper or the hard drive died on their computer.
We run into pot holes, speed bumps and road blocks in life all the time and maneuver our way around them by choice. When new information is needed we have the choice to find it on our own or ask for help.
In the book "Jurassic Park" a computer was programmed to count the creatures on the island. It would do that and kept finding all the animals it was looking for. It wasn't told to count ALL the animals and it would stop when it hit the specified number. A human would have found the number of animals it was looking for but evidence of additional numbers would have given that person the opportunity to choose to investigate further and discover a problem.
As a human with free will I refuse to have my humanity or essence or what ever you wish to call it reduced to the level of a machine.
As for murdering someone I know it's possible. Any one of us could murder someone in cold blood but a very high percentage of us would have to consciously decide to do that by exercising our free will.