A Marauder’s Fallacy

Harry Potter - J. K. Rowling
F/M
G
A Marauder’s Fallacy
Summary
What if James had taken a more proactive role when the Potters went into hiding? What if his fellow Marauders were mostly absent and he was left alone to brainstorm with nothing but Comedy Satire for inspiration?Follow James Potter's way of protecting his family by adding his dumb luck to Lily's pure love to defeat Voldemort and watch the origin of Harry’s famed “Potter Luck”.A What-if short story with slice-of-life, angst and some fluffy elements.
Note
Since English is neither my first nor my second language, I hope you can manage to get through my first attempt at authoring fanfiction without feeling the urge to scratch your eyes out. Should you come across any obvious and offending grammar or spelling mistakes that make your eyes water, feel free to comment so I can correct them.I did try to be mindful of using only British English. However, as our media is heavily influenced by American English, I wouldn’t rule out the possibility that one or two Americanisms have found their way into the story. If you do find anything, again feel free to comment so I can make the appropriate changes.To not disrupt your reading experience I will limit the author notes to this one preceding the first chapter.And last but not least the mandatory declaration that I unfortunately do not own anything created by J.K. Rowling or Warner Bros Entertainment. Every character and setting you may recognize as well as the Potterverse belong to J.K.Rowling. I am not making any money from writing or publishing this story.
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Chapter 3

Contriving backup plans seemed to have been the right decision as he hadn't gotten a reply from Sluggy. Within a week though, he held two vials of the desired Felix Felices and a Bezoar in his hands. 

 

Fleamont Potter had always been reliable and that seemed to extend to his contacts. James would be forever grateful for his parents’ support. He got the feeling they were still helping him, even from the afterlife. 

 

He wanted to offer his own son the same. 

Harry only deserved the best of the best in this world; help, protection, support, love and a lot of fun. Liquid Luck should give Fate a shove in the right direction, shouldn't it?

 

James had never put much stock in divination, but in the end it didn't matter if he or Lily believed in the Prophecy. You-Know-Who believed in that hogwash, which automatically made it their problem. 

 

He didn't get it though. Harry was sure to turn out as brilliant as Lily and a legend on a broom if James had anything to say about it. But he was still a baby. Couldn't the man choose opponents who were old enough to return the spell-fire? 

 

James had to cut off this line of thought as it wouldn't lead him anywhere. Shaking his head, he perused his study for Arithmancy texts. Lily had added additional protection charms within the perimeter of the Fidelius, but a wizard like Voldemort would tear through them like they were nothing. 

 

Wormtail was with the Order and he didn't think that the Death Eaters would suspect him to be their Secret Keeper, but Peter was weaker to pressure than himself or Sirius. James still wasn't entirely sure if the change had been a good idea, but Sirius was right about him being the obvious choice. 

 

Anyway, Lily's wards would grant them but a moment's warning. That wouldn't be enough for him to give Harry the potion. They could only take it themselves, though his intuition told him that wouldn't be enough to save Harry’s life. For the potion to save Harry from someone so powerful, they all had to take it. 

 

Arithmancy, in contrast to divination, showed the most probable outcome based on calculations. The more variables one knew, the higher was the chance for the given probability to come true. The more unknown factors played into an event the higher was the error margin. Simple as that. 

 

With that in mind, James tried to calculate the most probable date for Voldemort to attack. Adding all the information he had about the man, which was admittedly not much and some additional information like having a spy in the Order and the Secret Keeper. 

 

In the end he got two dates with differing probabilities and he could have slapped himself when the significance of the dates registered: Samhain and Yule. 

 

Of course the bastard would choose a traditional pagan holiday for bloody murder. Groaning, James marked the dates on the calendar. Merlin, help them all. 

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