Near the end when they try to retrieve Ben, Ziggy returns an "Internal Syntax Error" and that it's in the algorithm. A syntax error would be an indication of a problem with the code of a programming language, not an algorithm. The error could be in the code that contains the algorithm, but the system wouldn't know that's what the code is for, thus wouldn't know to report it as such.
Philadelphia is a heavily transit-reliant city, but no buses are shown in any of the (apparently CGI'ed) street panoramas.
The van in which Dr. Ben Song "appears" first is clearly a box van, with an obstructed rear view. It is then not supposed to be fitted with an inside rear-view mirror, which is nothing but useless.
In the opening monologue, the voice-over states, "In 1995... Dr. Sam Beckett stepped into the Quantum Leap Accelerator and vanished." According to the original canon, this event happened in 1999.
Quantum Leap (1989) began in 1995, with Al mentioning it being "1999" in the fifth season.
Quantum Leap (1989) began in 1995, with Al mentioning it being "1999" in the fifth season.
When Addison first finds Ben after he jumps they have a conversation on the street. Her hair moves around with the wind even though she is just a hologram and actually inside an imaging chamber.
When Addison is showing Ben a projection of Dr. Sam Beckett, her hand holding the projector is shaking wildly, yet the projection stays perfectly still.
The show is set up that the protagonist is always visible as the person into whom he leaps. The audience sees the actor but no-one else does and his reflection is always the body he's currently wearing. The first time Ben leaps he sees his reflection in the wing mirror then steps out of the van. The reflection in the side of the van is Ben's and not the person he leaped into.
In the long shot of the Philadelphia skyline from NJ, the Comcast Center can be seen to the right. The Comcast Center wasn't completed until 2008.
As often with shows/films of serious nature which take place in (but made long after) the mid 80's, period-accurate hairstyles have been greatly toned down, if not absent altogether. There is, for instance, not a mullet in sight.
(at around 30 mins) Network cables of CAT5/6 show on the telephone pole that he was supposed to call 911 on the phone.
In 1972, President Nixon and Congress signed a bill ensuring free dialysis and renal transplants for US citizens. So in 1985, the treatment Ryan's family needed should've been free, and consequently he never needed to take part in any robbery to finance it.
When Ben is zip-tied in the kitchen, he is 'secured' to a cheap, free-standing rack that is easily dismantled. All he had to do to free himself was remove the top shelf after toppling the structure to the floor. The 'snapping the zip tie' trick really does work, but it was entirely unnecessary in this instance.
Jenn tells "Magic" Williams that her security section has identified the the ring worn by the mystery woman as "from a Navy platoon that served in Vietnam", and that Al Calavicci had been a member of that platoon, leading Magic to deduce that his daughter Janice is the mystery woman. Original series canon from Quantum Leap (1989) established that Al's Navy career was spent as a Navy fighter pilot starting in the 1950s and that he was shot down and spent most of the Vietnam War as a Prisoner of War. At any rate, a Naval Aviator would not be assigned as a member of a unit designated as a platoon, such as a SEAL or SeaBee (Engineer) unit.