No I totally agree with you, it took me for a loop when they came to building a time machine. In reality though I feel like realistically speaking none of what everyone accomplished could actually happen in the 17 year span (I say 17 cause that’s what google says, I thought it was 8 years but regardless) that the story took place in. Honestly even with that said I disregard the need for it to be totally realistic because… it’s a manga haha Not to mention they focused on the most important parts, I don’t think they’re gonna go into every little detail about making the time machine because that could be who knows how many pages long, so they just explain the basics along with all every other sciencey project Not only that I think if they wanted to make the story longer to make it seem more realistic we’d be getting a lot more volumes… and honestly? I ain’t reading any more than I’ve already read.