I saw Flightplan on DVD last night. (Wait! This will become relevant, I promise).

In case you don't know the plot of the film, IMDB sums it up thus: "A bereaved woman and her daughter are flying home from Berlin to America. At 30,000 feet the child vanishes and nobody admits she was ever on that plane."

The premise sounds intriguing, and that's what hooked me in to renting it. But the execution is very poor.

One reviewer (again on IMDB) comments that: "the plot ultimately makes no internal sense... you find yourself sitting in the theater snorting at the improbability of what's happening. The big twist that's supposed to shock doesn't make sense."

Another says: "the fantastical, convoluted storyline cannot be realistically reconciled. I left the theater feeling somewhat cheated... the more you think back, the more you become frustrated with how inconceivable the whole charade was"

A third reviewer, listing the plot holes, reckons "we may have some sort of record."

So my question is... could any brand get away with being so bad? Could any product (other than perhaps a book) be released that was so unfit for purpose?

How come we tolerate movies that are poorly made - basically defective - and fail to entertain us, whereas we are quick to complain about a glue that doesn't stick or a battery that won't power a torch?