Firstly, if this concept has already been discussed to death in the SDMB, I heartily apologize and ask the Mods that Be to relegate it to the dustbin posthaste.
Secondly, I recognize that diddling with time is a theme rimed with hoarfrost and nothing new at all, but by limiting the timeline as I have done, perhaps we may evoke some things of interest.
Thirdly, I am cognizant that the ‘go back in time and kill your grandpa’ paradox leads to the never ending time loop paradox. I believe this is popularly referred to as ‘Temporal Eddies’ (no relation to Haskell who ended up as a cop in the San Fernando Valley.)
Fourthly, if time travel were possible, only the most dimwitted would attempt to change one jot or tittle of it for fear of unmaking themselves in the process.
Fifthly, how do we know someone has not already played silly-buggers with history?
So, with these caveats firmly in mind (but for purposes of this thread, completely ignored):
If you could change one event which occurred in the last 105 years, what would it be? How would the world look today due that change? Minor or major – take your pick.
For example:
If you could screw up Babe Ruth’s batting average, would we now be eating Ty Cobb chocolate bars? (I am not a baseball aficionado, so don’t know if that exactly works, but you get the idea.)
If you could stop Teddy Roosevelt from picking up the Panama Canal mantle from France, how would the lack of the canal impact on global commerce, WWI, WWII and subsequent events?
If you had strangled Barry Gordy in his crib would we have ‘Reality TV’ today? What would have taken its place?
And here’s the big one – if you could have run up on stage and pre-empted Janet Jackson’s ‘wardrobe malfunction’ what tack might time have taken in the absence of this tempest in a ‘D’ cup?
Kindly forgive the lengthiness of this OP and respond as you see fit.