Admittedly silly, but a story telling necessity that viewers accept as part of the suspension of disbelief. I mean, you're watching a show with dragons, zombies, time travel possession, and resurrection and you are complaining about a guy traveling from point A to point B too quickly?
Admittedly dumb, but again, it's TV. Jack Bauer can save the world after being shot through the stomach or infect with a biological weapon. Such is the nature of suspension of disbelief. It wasn't logical, but it's not the big deal fans are making it to me.
Yes it's a fantasy world but suspension of disbelief can only go so far and I think they are exceeding the balance point in their storytelling. Most of the characters in this world are human beings subject to the same laws of physics, etc. --not Tolkien elves with different physiologies and advanced regeneration.
Arya's wounds were too severe for what we saw happen with her last night, and they were bathed in raw sewage after she received them! If all she got was the slash and had avoided the stabs, I could buy this a little more, but they were going for the Red Wedding type shock ala Talisa's pregnant belly, so they totally overdid it to the point of incredibility for what followed. She shouldn't have been able to walk upright through the streets, she would have been in shock and loss of blood would weaken her so she couldn't make it all the way to the theater to hide.
Lady Crane used to stab her boyfriends so now she's a medic? If she had been a healer's daughter that might have given her skill a better explanation, and even given potency to a healing concoction or potion. She didn't have that so Arya got a bandage, soup, a painkiller and a night's rest then made amazing leaps and multiple, extremely painful-looking landings and falls without spraining anything and which would have ripped her wounds open in agonizing fashion the first time she impacted the street! Adrenaline can only override so much.
And nothing excuses the naivete and stupidity of Arya's behavior leading up to the stabbing. It was totally uncharactistic for Arya at this point in her life considering all she's learned and knows about this assassin's guild, and totally incongruent with what we saw in the episode before that when she retrieved Needle and retreated to her hideout -which turned out to be not very hidden or secure at all, IMO.
And putting out the candle (how did she even have time to light that when she was closely pursued? And why would she??) and cutting away from that scene was a terrible way to end a confrontation that's been set up for a season and a half. Sure it calls back to her blindness and blind training, but wouldn't the Waif and other FM have undergone blind-folded training to tune their senses too? At the very
least, we could have gotten scuffle noises and a death scream!
This just ruined the whole Braavos storyline and wasted time; it could have all been done inside of one season. This conclusion was badly-written, unbelievable, and epically mishandled.