Philosophical is more useful in teasing out concepts we hope to then apply to the practical.
I'll demonstrate:
1) Is it the Arrow or the Indian ? Will a "Magic" arrow still fly straight if the user jerks the bow string ?
"Native" to avoid summoning a cancel mob. Cheeky Answer: yes. See film "Immortals (2011)."
2) It's been said, "A Good surfer can surf ANY board". So if a bad surfer has a "Magic" board, will that board help even things out ?
Yes. Example: eggs are widely touted as being "user friendly," their particular design is "more forgiving" of the mistakes beginners tend to make, abetting progression (could also be argued as being subjectively magic for the beginner, who doesn't know any better). I'd cite Spyder Bomb and Fineline Egg as being examples of relatively beginner-intermediate friendly boards.
3) Could a "Magic" board be a Costco Wavestorm ? ( Or it must be a custom hand shaped from a famous brand shaper )
What the hell: yes. Given the amount of complaining I read on forums about these wavestorm users being wave hogs
However, this could be subjective again. The individual wavestorm user might not be having a magical experience = magic board, but in the views of others the "board" is an unfair and irritating wave magnet (SUPS too?).
4) If your Magic board is now 10 years old and you are now 10 years older and 10 Kgs. heavier, will that board still work as "Magic" ?
Now THIS is the question that inspired this initial thread and my own inquiry. My thoughts: no. Too many physical/practical variables have changed, being age, weight, presumably fitness, and unknown variables also being knowledge and surf spot. Also subjective, nostalgic memories might be affecting your judgement (I used to be fitter, this board used to turn better, I used to make more waves, etc.).
5) Say this board is highly touted by your friends as "Magic" board . But your skills aren't up to that level yet. When will you know ? How will you know ?
I immediately thought of a HS Hypto for some reason. To return to your last question: four to six years. I'll give a personal example: owned a 6'7 in 2010 that by all accounts was a magic board, but my skills weren't there yet. Four to five years later, with more time in the water and experience on different shapes, fitter, BUT also being older of course, that same board became magic. When/How? This might also be where the subjective comes in again: I just "realized" one day out in the lineup that these additional variables seemed to have produced this outcome for that particular board at that time. Two years later, those same variables had changed again and this board was no longer "magic."
Again, subjective: I struggled with a mini sims during that fad in 2012, thinking my lack of experience was the issue. I was partly right: friends took me aside and admitted these shapes were bunk and it wasn't just me. While a mini-mal/bigger egg would have suited me better, they argued I'd be clinically depressed if I ever went back to the MS and tried to make it work. Funny the effect fads and status seeking can also have on board selection and surf style sometimes, for better and worse.