文字列理論は非常に興味深いと思います。
数年前、当時、有効性をサポートする既知の実験データはなかったことを読みました。これはまだそうですか？
I find string theory to be very interesting. 
I read a few years ago that at the time, there was no known experimental data that supports it's validity.  Is this still the case?