Boy you sure don't seem to have good judgement there CodeBorg...Communist?
There's a few things wrong with your ideas of "least beneficial inventions".
1) Concept of Good and Evil. (This isn't an Invention, it probably didn't come from some stupid "tree of knowledge" but it certainly is a genetic...or maybe even beyond that, a spiritual concept that we have no control over. It also is one of the very few things, and indeed the root of all things, that seperates us from the animals. If you want to be a dog be my guest, but frankly I don't like being a mindless mut.)
2) Any label or self-identity that separates us from (and ignores) others. (This again, really can't be helped. It's only human to establish ourselves as purely individual, seperating ourselves from everyone else in one fasion or another, and then grouping ourselves based on similar traits, compromising the occasional unfavorable trait for a good one. Such as a homophobe befriending a homosexual because they always knew eachother, or because they share a great common interest, and thus look past the few differences. This tollerance is probably what should be better sought, but you can not all be "the same". And so we will always make groups around specific traits, such as intelligents, looks, sex, and preferences on various things.)
3) Corporations as first-class super-citizens, above human beings. (Uh Corporations were, and never are "above human beings". And further more, would you rather be a Peasant? Because that's probably what you'd be if there weren't Companies that required your services. A King is a lot worse then a grumpy boss. And if you're Communist, don't even bother to reply to this one, you have no clue of what the world is, and will only lead yourself to ruin.)
4) Jobs. The idea that people must "work" to "earn" a living or satisfy great "needs". It makes us robots and legitimizes our slavery. (I don't have a specific problem with this, I think you're being too general. We need "jobs" but we don't need to be automatons. The Jobs we should do should be beneficial to ourselves or society, one or the other, and people should be better respected for the work they do.)
5) Advertising. Powerful social engineering tools to generate artificial demand actually only produce fear and greed. (Well, advertising wouldn't be such a problem if the products made were made to last. My Grandma has a fan she got from her sister in I think 1930, so it is a 73 year old fan. And it blows more air then any fan you could buy today for 200 bucks or more even. It is an excellent fan, and is no where near breaking. But progress comes from consumerism, we can't always be an agrarians society...competitiveness is how we must be or we would never have gotten to the moon. The Soviets failed because they were Communist, if you don't believe me look into it more. Their leadership lacked both a competitive spirit, and they lacked the know how of how to put fire into the spirit of those working on their space program. As accidents happend, they became so set back because they lacked a spirit of progress, their moon program was eventually canceled after the death of their lead designer AND the death of three Cosmonauts by decompression upon re-entry. It was too much for the communist spirit).
Your least beneficial remarks seems to be strait from some misguided Communist Ideal.
It's one thing to be charitable and to help others less fortunate, it's another to deprive someone of success, because there are less fortunate.
Charity and mild social programs would be better then a Communist system.
Hmm as for your selected "Invetions" ... cool ideas.
I would say we tamed fire though
Not as much invented it. If nature did it before us, we really didn't "invent" it.
Let's just hope that we use Genetic Engineering properly, expand our life spans, cure ills, and regrow lost body parts, but nothing more, we should not make ourselves into "gods" without the act of reproduction that is a part of what makes us human.
I don't really have 5 inventions on my list.
1) Rationalization, more or less an invention of the Greeks. It has become the basis of science.
2) Abstract thought, this is vague, but I'm particularly referring to Eastern ideologies, where they invented a form of "clearing the mind" through abstract thoughts, such as "If a tree falls in the forest, does it make a sound?" This philosophy allows us to ponder life beyond our bodies, and beyond our days.
3) The Gear, the gear is the most important item in all civilization, being the one peice that almost all technology needs to function. Turning all forms of energy, into mechanical energy, and redirecting it perpindicular, or any other way we so choose.
4) I'll take the "optics" cup, mentioned before, nothing has been more important then the ability to better see our universe.
5) Writting, can this one thing be praised enough?