I have not experienced becoming instantly mega-rich by hitting the lottery, but I imagine if that happened I’d be afraid to celebrate. I wouldn’t believe it. I’d call the state to double-check the numbers I thought I’d heard. I would stare at those numbers on my ticket until the ticket caught fire in my trembling hands or I suddenly sat bolt-upright in bed, awake from my dream.How do you react when too-good-to-be-true is too-great-amazing-astounding and-flabbergasting-to-be-true? That’s how Miami Heat fans must feel right now, on the edge of NBA free agency that starts at midnight Wednesday. A week ago most fans would have been thrilled if the team came out of this able to re-sign Dwyane Wade and then add top-targeted free agent Chris Bosh.Now fans are being told they get that and something else, too:LeBron James, the best basketball player on the planet. (Miamiherald)