I am reminded of Lakatos, and a long-ago discussion with my Philosophy of Science professors when I read: Easier trumps harder at Stumbling and Mumbling:

Not only has this basket out-performed the market. In the last six months it’s easily out-performed every fund in Trustnet’s database of all companies unit trusts. In fact, similar baskets of defensives have out-performed almost all funds ever since 1999.

We keep looking forward sometimes because we refuse to look back.