I
was thinking today about why Japan didn't really advance much scientifically until they opened to the West. When I was writing my paper on Takasugi Shinsaku last year (because I love the Takasugi Shinsuke in Gintama, who's based on him), it seems he was one of the first to realize just how useful guns were for fighting. Even though the Chinese have had gun prototypes for like 10 centuries at this point. But not just adopting guns, science overall just wasn't there large-scale.
One of my theories is that they just didn't fight external wars - which is supposed to be the biggest factor for science in Europe developing. But even so, science in Europe wasn't just in the military realm, even technology wasn't. Japan also had its share of internal wars.
My other theory is Zen Buddhism. Although it seems rather far-fetched, Zen Buddhism has this thing about reaching enlightenment/satori by meditation. The-truth-is-inside-of-you type of thing. Maybe meditation can make you calmer, happier and whatnot, but I certainly don't think it enhances curiosity in the physical world, nor actual knowledge. Aristotle sort of had this idea, and while he did advance things a lot, his influence is one of the reasons that people just didn't seem to think theories needed any sort of experiment until Galileo or so.
They do like their robots though, as demonstrated by this picture of Karakuri Ningyou.