Interesting enough but not enough backbone to support the thought of a time machine. Of course, Wells has his made-up theory but all that's explained about the time machine was the components; it should be expected that there are plot-holes...but really? A time machine that that operates on what? Gas? Solar power (I know that existed back then), coal or what! I'll have to reread this one classic because I felt that I still missed out on something back there.