During one of the keynotes at this year’s Dad 2.0, the speaker quoted Mark Twain: Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one’s lifetime. We were beginning our Sunday morning hike along the Pacific Ocean at Torrey Pines State Nature Reserve when our guide mentioned that we may be able to see whales just 3-4…