じ，実験結果に頼るつもりなんてないんだからね！

なぜかツンデレ風味のFeynmanたん．
時代はBCS理論の成立直前．Frohlich-Bardeenモデル（ゼリーモデルの一種？）とやらの摂動展開を気合入れてやったのにちっとも超伝導に至らなくて，どうも超伝導転移の説明には質的に違うモデルが要りそうだな... と困っているところ．

Why haven't we theoretical physicists solved this problem yet? We have no excuse that there are not enough experiments, it has nothing to do with experiments.
...
We should not even have to look at the experiments. Every time we look at another experiment, we make the problem easier. It is like looking in the back of the book for the answer, which is slowly being unveiled by the details of the various experiments. There is no reason to require the experiments. The only reason that we cannot do this problem of superconductivity is that we haven't got enough imagination.

この記事はレビューと言うよりどっかの講義録みたいだけど，これはまた過激なことを言うねぇ...