> The only way to learn this is to study complete systems done by others. As Bismarck said; “Only a fool learns from his own mistakes. The wise man learns from

> The only way to learn this is to study complete systems done by others. As Bismarck said; “Only a fool learns from his own mistakes. The wise man learns from the mistakes of others.” So there are at least 2 ways. Saying "only" is a little misleading, no?