@Spiritus Arcane  
Dude, that’s what I was saying!

Please, let’s think a moment. With all the crap we put up with from just making her an Alicorn, what do you think the fallout would be like if they undid it two seconds later, or made it just a dream or something?

@Mayojar77  
A masterpiece is usually a piece that is widely praised. There’s rarely just one. A Magnum Opus is singular, but even then, what the maker considers their finest work isn’t always the same as what other believe. The spell doesn’t fit any literal usage of the term, as it was never actually finished. I find it extremely unlikely that Star Swirl considered a spell he never finished or truly understood to be his greatest work.
 
If Star Swirl knew more about the spell than he let Celestia or anyone else on the show know, it’s irrelevant, because he didn’t tell anyone on the show.
 
Nikola Tesla is more closely related to AC current than DC current. I wasn’t sure which you meant to type. But your remarks about Tesla are proving my point. Tesla got his inventions to work because of his knowledge of electricity. Star Swirl couldn’t get his spell to work because he didn’t have enough knowledge about friendship.

tag: “twilight can go fuck a porcupine”
 
That is not cool.

@Mayojar77  
More like educated trolling.

@archestereo  
Celestia at least makes educated guesses. Twilight just barrels into her decisions without so much as a thought.

@Mayojar77  
…personally, I think that would go double for her teacher…

@archestereo  
That While Twilight may know many things, It’s unwise to take her advice on anything.

@Mayojar77  
…what are you implying?

@archestereo  
Finally, you say something I agree with.  
Just because you’re the smartest person in the room, doesn’t mean you’re always right. I had to learn that the hard way.

@Mayojar77  
…the only problem with that is that the finale already treated Twilight as if she already had. Not even a blank slate can fix stupid.

@archestereo  
The child has all their life to be taught to learn from their mistakes and from the mistakes of others. Twilight most likely has until the end of the season 4 Opener to relearn that.  
Skyla is a blank slate, a second chance to have a fourth princess that doesn’t fuck everything up.

@Mayojar77  
Well I wasn’t saying they didn’t screw it up, just that passing the torch to a baby is a fumble in itself.

@archestereo  
and yet, throughout the series, Twilight’s maturity has actually gone down, for the most part. She started out as someone who you’d likely never know anything about because she always has her nose in a book. Now, she’s someone you don’t want to meet in a dark alley.

@Sjogre  
The spell was Starswirl’s Masterpiece. Masterpiece usually implies that it was the one item the took the most care in.
 
Also, my point was, Celestia doesn’t know what happened before she came to be. She only knows what she was taught as a foal.
 
And another thing, Tesla did invent the DC generator as we know it, And the guy knew what everything he invented was supposed to do.

@Mayojar77  

@Mayojar77  
First point, Twilight got a better look at the spell and the page that the spell was on than you did. If she thought that there wasn’t anything else, then that is the most reasonable assumption. Assuming that there was more to the spell when you haven’t even seen the page it was on is completely groundless.
 
Second point, Star Swirl abandoned one spell. He completed over two hundred. What makes you think that a single unfinished spell was his life’s work? It was implied to be more complicated than most, but never said to be his greatest.
 
Third point, …. What? You’re going into the theory that the show outright lied to us, in which case you’re no longer debating based on any actual evidence, and discounting what the cartoon shows us. We have no reason to think that any of the information given to us about Star Swirl or his unfinished spell was inaccurate.
 
 
@Mayojar77  
Tesla actually got the alternating current to work. Star Swirl didn’t get that spell to work. He never quite understood it, so he wouldn’t understand everything about it works, or what it could do. Tesla didn’t know everything that electricity was capable of, either. It’s unlikely that Star Swirl ever even got the result that Twilight did, since he didn’t have a working set of Elements of Harmony sitting around.

@archestereo  
First of all, I was using an analogy. Stop being so literal.  
Second, My point is exactly what you just described. Twilight, a usually sensible, if insensitive and often downright cruel, pony decides to use a spell she knows nothing about without any precautions. This is at odds with her typical behavior. Twilight has become reckless, boastful, rude and just in general insufferable. This is just the final straw.

@Mayojar77  
…and why would Starswirl make a spell to light himself on fire? Why would Celestia send her student such a spell? Oh, and Twilight’s so neurotic that she’d triple check a checklist on fire prevention. I’d say they implied pretty heavily that Twilight had no reason to expect the spell to do anything wrong.

@Sjogre  
Starswirl INVENTED the spell. If he didn’t know what he was working on, Why would he invest all his time and effort into it? That’s like saying Tesla invented the DC generator by accident.
 
@archestereo  
Are you actually considering lighting yourself on fire because you haven’t experienced the pain caused by fire yourself, so it probably doesn’t hurt as much? No? Why’s that? Oh, right, common sense, a self preservation instinct that tells you not to do reckless things just because you don’t know exactly what will happen.

@Sjogre  
First point, Twilight didn’t even give the book a second glance, so there’s no way she could know if there was a soluion.  
Second point, Starswirl was said to have abandoned it. Don’t you think it’s possible that Starswirl had a good reason to give up their life’s work? Maybe Starswirl saw that a spell to change one’s destiny was an affront to whatever god he believed in. Maybe there were more reasons behind the abandonment than we think.  
Third point, You say she used knowledge she had but Starswirl didn’t. Your source of information is someone who, while old, was not present at any time in Starswirl’s life. Could it be that Starswirl did complete the spell, but decided to destroy enough of his notes so that only a magic prodigy on their level or higher could possibly finish the spell?

@Mayojar77  
..how did I miss the point? You were still making arguments based on projections and assumptions. And no, it wouldn’t be the same; they’ve at least implied that candy colored magic ponies with magic images on their rumps who live in a land with magic weather and a magic solar system operate by natural laws that are quite possibly COMPLETELY ALIEN to us humans.

@Mayojar77  
Those tomes are usually formalized publications with finished spells rather than personal books with unfinished spells. Not the same thing. Also, we have a strong reason to believe that Star Swirl’s book contains information on other things, as only the last page holds the spell.
 
There’s no reason to believe that Star Swirl even knew what the dangers of that spell could be. We just know that he never got it to do what he wanted, and we don’t even know what he wanted it to do.

@Mayojar77  
Given Twilight’s response to the spell, there was no other information on the spell within that book. If there was, she would have gone through it right after she read the spell instead of just going to bed.
 
It was an unfinished spell. It could very likely be a drabble that he scribbled down out of frustration. There’s no reason to think that Star Swirl planned for another pony to go through his unfinished spells. He was outright said to have abandoned it, so it is likely that he tossed the research as a dead end and never meant for anyone to try to finish it.
 
 
@Mayojar77  
It looked like Twilight’s magical education and experience with two similar situations allowed her to figure out what was wrong with her friends.
 
Twilight explicitly used knowledge that Star Swirl lacked to fix the problem. She probably also used knowledge that he lacked to diagnose it.

@archestereo  
First off, you COMPLETELY missed the point. Second, wouldn’t spell safety be the same no matter where you’re going. After all, there’s variants of the levitation spell that can be used on yourself. Who’s to say that you couldn’t accidentally kill yourself by not reading up on what not to do when casting a spell.