[ WP ] Please write a fantasy story that explains it 's magic/creatures/phenomena from a scientific perspective . Scientific magical world building is the best thing .

*Author's Note: Not sure if this fits the prompt exactly, but saw this as an opportunity to play around with a setting for a story I'm working on. * 
 
 The old man walked alongside the large huntsman, somehow keeping pace despite his old age. Eldgrim watched the staff the man carried. He was too far away to make them out, but the markings etched onto the wood did n't seem to be any of the ones his father had taught him. `` Why did n't he do more?'' 
 
 `` You're itching to ask him about it, ai n't ya?'' 
 
 Eldgrim jumped, turning to see that Erik, the other huntsman, had walked up beside him. `` He's always so quiet. How can he do that?'' He thought. 
 
 The huntsman smiled that smile that made it appear as if he privy to a joke only he understood and said, `` Boy from a town that far north, probably never even seen a weaver before last week.'' 
 
 Eldgrim glared at him, `` I've heard all the stories. I know what they can do.'' 
 
 `` Do you now?'' Erik's smile widened. `` And what exactly do you know they can do?'' 
 
 Eldgrim took a moment to try and remember everything he'd heard from the stories. `` Well... they can do things. Things that normal men ca n't. They can move mountains, call lighting from the sky, even kill a man by just thinking it!'' 
 
 Erik seemed to be suppressing a chuckle by knuckling a mustache, `` Oh yes. Yes. They are indeed powerful.'' 
 
 Eldgrim continued, `` They are! We could've held the village if he used the power they talk about in the stories.'' 
 
 `` If only I was as powerful as the stories, why we could turn around and rid ourselves of the blightspawn today.'' 
 
 Eldgrim looked up to see that the old man had turned to face them, walking backwards to keep pace with the group. 
 
 `` Master Weaver, I was just... I only meant...'' 
 
 The old man smiled warmly, `` calm yourself lad, I only wished t-'' 
 
 Erik clamped a hand on Eldgrim's shoulder, a look of mock fear on his face, `` You've angered him now lad! Watch out! He might call lighting from the sky!'' And with that he ran further down the caravan line, with exaggerated fright. 
 
 The old man twisted his mouth, `` He's good for morale, but he can be annoying at times... Sometimes wonder why I travel with them.'' 
 
 Turning his attention back to Eldgrim, he asked, `` So, you are curious about what exactly a Weaver is, eh?'' 
 
 Eldgrim stuttered a response, `` The stories say tha-'' 
 
 `` Bugger the stories.'' There was n't anger in his voice, more annoyance. The larger huntsman looked back over his shoulder with a raised eyebrow. 
 
 Regaining composure, he continued, `` There is a lot of misinformation spread about how weaving works. I make it a point to correct this.'' A spark behind the man's eyes showed he was eager to continue the discussion. `` Now, where shall we begin?'' 
 
 Eldgrim eyed the man wearily, `` I guess... everything?'' 
 
 The spark grew in intensity, `` Good! Good. I shall start with the basics.'' 
 
 The huntsman looked back again, a roll of his eyes showed he'd had to sit through this discussion before. With a grunt he quickened his pace to walk alongside the supply cart. 
 
 `` Oh hush Sven. You know as well as me that this is an important topic.'' 
 
 The weaver fell in line beside Eldgrim, `` Now, Eld is it? I heard your father call you that, but I was unsure if it is an abbreviation or a-'' 
 
 `` Eld is fine.'' 
 
 `` Well, Eld, the very foundation of understanding weaving, is to understand that everything in this world is made of the same thing.'' 
 
 Eld eyed the man, feeling like he'd just started a conversation with a madman. `` Everything is-'' 
 
 `` Yes everything,'' he inturrupted. `` The stuff that I'm made out of is the same as what makes this staff.'' He tapped it on the ground as if to emphasize the statement. `` Think of the world as a massive tapestry. The images woven into it may look different but they are all made with the same thread.'' 
 
 Eldgrim nodded slowly, faigning comprehension. `` And what does that have to do with we-'' 
 
 `` I'm glad you asked.'' He inturrupted again, that spark if interest still behind his eye, `` A weaver knows how to manipulate these... threads in the world. Visualize the way we want the world to be and... re-weave the world to fit our needs.'' 
 
 `` So...'' Eldgrim tried to follow the Weaver's line of thought, `` If you wanted to...'' He looked at the mountain path they traveled, spotting a somewhat large rock in the road. `` To lift that rock,'' he pointed to it, `` You could just do it? From here?'' 
 
 The Weaver nodded, `` Why yes. That's rather simple. One just needs to manipulate the air around the rock and shift it to a new location.'' He glanced down at Eldgrim, then quickly added, `` but you must know, the energy required to do such a thing, must still be used, even if using magic.'' 
 
 Eldgrim furrowed his brow, trying to take in all the information. `` So it'd be the same as if you picked it up yourself?'' 
 
 `` To a degree, yes. But there are ways around this limitation, but let's leave that to another lesson.'' 
 
 They walked in silence for a time, then Eldgrim asked, `` So you can do anything? As a weaver?'' 
 
 The Weaver nodded, `` In theory. If one had an energy source large enough, they could do as they pleased. Even rewrite reality itself.'' 
 
 His original aversion to weavers started to return, `` W-why ca n't you do that now?'' 
 
 The Weaver slapped a hand to his forehead. `` I forgot one of the most basic lessons!'' He tapped a finger on his staff. `` It's really quite simple. Try and weave something you do n't have the strength for, you die.'' The matter of fact way he said it was almost unnerving. 
 
 `` W-what happens?'' 
 
 `` Oh well, if you're lucky, you just die, but if you were trying to do something particularly tricky, well...'' he paused, after moment it became clear he was leaving the rest of the statement for imagination. 
 
 A thought suddenly came to Eldgrim, `` Weaver... Can you... I mean, is it possible to... bring someone back?'' 
 
 The Weaver blinked at the question, `` From where? I suppose traveling long distances rapidly had been theorized, but it's never been succe-'' 
 
 `` From the dead.'' 
 
 The Weaver stopped walking suddenly. Eldgrim continued a few paces, then turned to look at the man. The spark was gone behind his eyes, replaced by dread. 
 
 `` That is something that can never be done.'' All lightheartedness had left his voice. `` There is no store of energy large enough to perform such a task. Leave such thoughts behind lad. I will not speak of it.'' 
 
 They stood motionless, villagers parting around them like stones in a river. 
 
 `` I'm sorry er, Master Weaver, I ju-'' 
 
 `` I know lad. Was curiosity. Nothing more.'' A hint of the lightness had re-entered his voice. `` Now come. Sven is probably wondering why we fell so far behind.
