Really great products and really huge successes don’t come from focus groups! And if you simply rely on trial and error, or guesswork, you’ll lose far more

Really great products and really huge successes don’t come from focus groups! And if you simply rely on trial and error, or guesswork, you’ll lose far more

Really great products and really huge successes don't come from focus groups! And if you simply rely on trial and error, or guesswork, you'll lose far more ofte