Continuity mistake: When "The Bride" is first in Okinawa and talking in the bar to the sword maker, look at his headband. The black and white stripes change from shot to shot, obviously showing how each time the material was twisted by the costumier before shooting. (00:44:15)
Factual error: The gate number on the jacket to her airline ticket from El Paso to Okinawa shows Gate 24. There are only 15 gates at the El Paso Airport. (00:45:25)
Continuity mistake: When The Bride and Hanzo are talking about her Japanese right before he serves her food, there is a shot of her laughing where she place her left hand on her right arm. When it cuts both hands are on the table. (00:45:50)
Continuity mistake: When Hatori Hanzo is talking to the bride, he calls for his assistant several times. At one point, he gets really mad and throws his knife unto the magnetic strips on the wall behind him and sticks on almost vertically. In the next few shots, the knife is positioned in different angles. (00:47:50 - 00:49:10)
Continuity mistake: When The Bride is about to pick a sword from the rack she is about to pick a sword with a red shaft. Then Hanzo says tells her to pick another one from the same rack. When it cuts we can see that the sword with the red shaft is out of sight. Later we see that particular sword is on a low level of the shaft, but when we saw The Bride reaching for it it was obvious she wasn't bending down to get it. So the sword has moved lower on the shaft by itself. (00:49:55)
Continuity mistake: During the "The Man from Okinawa" chapter, The Bride picks up a sword from one of the racks on the wall. She slides the sword out from its scabbard approx. 4 inches and stops. The next shot shows the reflection of her eyes in the blade. In the third shot, we see a wider view of The Bride again but now the scabbard is much farther out than where it used to be. (00:50:25)
Revealing mistake: When the swordmaker writes "Bill" on the window, take a close look. The window has been wiped before (as happens at the end of the scene) and "re-steamed" - you can see the outlines of the wiping from earlier takes, with a clear contrast between that pane and the others. (00:52:45)
Continuity mistake: When The Bride rubs off the name "Bill" written on the window condensation, the writing style is different from when it was first written by the sword maker. (00:52:45 - 00:53:30)
Continuity mistake: When Hattori Hanzo gives The Bride her sword, his assistant is sitting behind him in a cross-legged position. But the direction the assistant is facing keeps changing. (00:55:40)
Continuity mistake: When Hanzo hands over the sword to The Bride we can see all of her hair is hanging down on her back. When it cuts a huge lump of her fringe hangs in front of her. (00:55:55)
Continuity mistake: When Boss Tanaka breaks the bowl on the table, a piece of meatball rolls on the table. Later when the other Japanese guy throws a hand towel on Tanaka the meatball is gone. (00:59:00 - 00:59:45)
Continuity mistake: When O-Ren chops off boss Tanaka's head, the head falls in front of Sophie and another member. Then, when O-Ren finishes her speech, she holds up Tanaka's head. This can not be possible, because she has not moved from where she was standing during the speech. (01:00:20 - 01:01:30)
Continuity mistake: After cutting off Boss Tanaka's head, O-Ren whips some of the blood on her sword onto another boss' face. He jerks his head back with specks of blood on his face, but just a split second later in a different shot his head is still and there is no blood at all. (01:00:25)
Continuity mistake: After O-Ren chops off Tanaka's head at the Yakuza boss meeting, the position of her hand holding the sword changes. At first she is holding it with an overhand grip, then when the blood shower from Tanaka's neck ends, she lowers the sword and is gripping it underhand. (01:01:30)
Audio problem: When "The Bride" is cruising through downtown Tokyo, we hear the bike shift gears, but she never presses the clutch or moves the gear shift lever. (01:03:25)
Revealing mistake: When The Bride is calling out O-Ren, Sofie Fatale has her arm on the building's beam. If you look at her arm, right where The Bride is about to cut, there is a visible seam in the sleeve. (01:11:10)
Continuity mistake: When The Bride cuts Sophie's arm off you see her get covered with blood. In the next shot, however, there is considerably less blood on her top and it is in a different pattern. (01:11:20)
Continuity mistake: When O-Ren Ishi tells 'Charlie Brown' to get lost we see some blood stains on The Bride's face. The stains differ in the next few shots of her, then later when we get a close-up of her face the blood stains are the same as earlier. (01:12:00)
Continuity mistake: The Bride raises her sword twice at the beginning of the fight with Gogo. (01:14:55)
Revealing mistake: When Gogo is fighting the bride, misses and hits herself with the mace, as she falls backwards onto the table, you can see the stunt double's hairy legs. (01:16:10)
Answer: Bill used Hattari Hanzo's teachings for evil, instead of belief and self defense.