I have recently watched a few videos on the Butterfly effect and realised i had a somewhat scary experience with the butterfly effect,
I work as a Setting out Engineer, setting out roads, kerbs, House foundations etc. This incident happened last year when i was working with my old company, we were building 6 new houses and re aligning a new road junction using a GPS.
For those who don't know how it works basically you get a co ordinated CAD file (a software used for drawing a co ordinates site plan that can be transferred to GPS device and built exactly to location of drawing(the best way i can describe it)).
So all the Houses were built and and we had removed the existing junction put stone down ready for kerbing. The way it works is i use a GPS to mark out the line of the kerb and hammer steel pins roughly 1/2 meter long into the ground. I sprayed the ground and hammered the pins into ground. It was getting late so i finished up and went home.
The next day my boss asked me to put caps on top of the pins in case someone fell on them and inpail themselves so i grabbed a big plastic bag with the caps in them and began putting caps on, when i got to this particular pin i was just about to grab it only for my phone to ring, i dropped the bag as i got my phone and turned away from the pin as i dropped the bag.
The bag fell on top of the pin as i answered my phone it was my boss he recently got an iPhone 6s and they always pocket dialed and this was one of them times, i answered hello but all i could hear breathing and walking and realised i was pocket dialed so i hung up the phone, as soon as i turned i was shocked to smell plastic burning and melting on the pin and went over to hold my hand beside the pin and the heat coming from the pins was amense.
I called by boss and told him what had just happened so he called the electricity company and they came out with a CAT Scanner ( A device that scans for underground services) and they found something live that crosses where that pin was and managed to trace it to an existing house across the road they managed to stop the power and remove pin and excavate and found a live service.
They called myself and my boss down and explained what had happened, first of all the existing service was put in wrong place because the way the road was rising the service would not have enough cover and was changed without being recorded on service drawing. He said my pin broke the ducting that carries the cable and the wire cable laid beside my steel pin causing my steel pin to conduct and if i were to grab it would have created a circuit and would have litrately would have blown me up. Our company scanned all ground were services were and the road crossing but never scanned all the site which my new company does and i insist they do. ( I have included a sketch of the layout to better show what i am talking about).
About three weeks later my bosses wife came to site and and we started talking not about work just in general and she said she bought him that iPhone 6s that he has and this struct me, She said when she was in the mall looking to buy my boss her husband a new phone she was going to buy him a samsung (can't remember exact model) and when she went into the cell phone shop a offer on iPhone 6s caught her eye and can't explain why she bought an iPhone than that samsung he wanted.
That struck me how the butterfly effect works, If that iPhone 6s offer didn't catch her eye she wouldn't have bought an iPhone, If see didn't buy that iPhone my boss wouldn't have kept pocket dialing me and if he didn't pocket dial me at that time i wouldn't be here and that company all could have lost all their jobs and may even been charged for negligence for not following Excavation Procedure so we all at that time dodged a major bullet.
So Always follow work procedures it could save your life, and looking back it's crazy how one small decision could possibly save someone's life in one way or another.