1 The main problem of the work is that the author does not have patience, most of the other problems are related to this.

It would be possible to create a work in which you really sympathize with the characters. And in this case: bam, time skip and the character suddenly has 5 wives (or how many there are, it's even hard to remember). With 2 of them there was no described interaction before the time skip. I even had to google 1 of them by name, because I forgot about the existence of this character.

2, the author paid a huge amount of attention to what he does not succeed.

Scientific experiments are boring in and of themselves, and one must be crazy to enjoy every processing, recording, and comparison of samples and analyses.

But you need to be an inept author to turn all this into a "magic" zilch that has no logical justification, where the whole experiment fits in 1 paragraph.

Magic, as one person said, is a science beyond our comprehension. So this is also science. In most cases, this is simply the direct use and management of energy without the help of external tools.

Given that a person also consists of energy, like any matter that has a form, it is obvious that he is potentially capable of this. It's just that the probability of mastering is negligible.

I saw more than 10 works where magical experiments were described and not only. And this job is the worst of the worst.

3 maintaining the illusion that the author knows what he is talking about.

Yes, this is one of the main points of successful work, and the author flew on it completely.

I am not at all against changing the laws of reality in fictional worlds. But you need to be able to do it. Especially when you are not going to do it, but just talking nonsense. For example: "the speed of sound is a constant in reality" (which is denied with evidence on the first page of Google search), and this is not to mention the fact that I do not completely agree with the speed of light as a constant.

4 and Only after the hasty author, empty characters, poor specialization, and lack of diligence does the author make sense to talk about other mistakes.

Such as:

Crooked writing of fanfiction (what idiot came up with the idea that everyone should know who is who, just by knowing his name?) ;

Interesting narration (my review is more interesting to read than the dry text of this work. Even if it is no less monotonous than the work, it at least has something like humor in it. The only scene in the film that remotely resembles interest is the battle scene with Dumbledore)

Space and terraformation (What are you talking about? We have long gone beyond the limits of our solar system, and do not huddle on one single planet and its satellite)

Other civilizations (First contact? what first contact? we have been in touch for a long time.) ;

Plot stumps (what did the author do with Voldemort?) ; 

Great empire of knowledge. (A great empire? Bullsh*t! Any smart person will understand that scientists are not all that is needed to develop an empire. Krypton from the DS universe is a good example).

Main Character OP (This may be interesting, but here again, poor execution. And Death and Truth in the far background remain a distant background.)

5 and finally: The Protagonist constantly talks about seeking knowledge and power for the sake of adventure, exploring new worlds, protecting loved ones and what he has achieved. But the facts prove only one thing: he seeks knowledge and power, only for more power and knowledge.

Adventures? It is impossible to participate in adventures while remaining an observer.

Exploring new worlds? Magical and scientific knowledge and sources of power are not all there is in the world.

Protecting loved ones and what he has achieved... The whole list of all this fits in... a time skip. Why? Because it is a hindrance and it is not interesting to him.

Although that James Potter situation felt messed up, :feelsbadman:, full on NTRed kinda feeling.

Unlike James, Lily's character has gotten loose. I imagine how she would feel if James did the same thing to her first. I hope the author does something about him or this will leave a bad taste.

I like romance fics. Harem so so. Hate NTRs.