The key answer of exercise 2

b)

1. Seeing a video of the bus exploding in the 2005 terrorist attacks in London.
2. Seeing a white van or truck leaving several of the crime scenes during sniper attacks in the Washington DC area in 2002.

c)

1. F 'Even in these days of DNA tests and other forensic techniques, witness testimony still plays an important part in court cases.'
2. F '... forty percent of people claimed to have seen this nonexistent footage. but 'Some even went on to describe what happened in vivid detail' (i.e. some of the forty percent)
3. T 'In many cases, an unreliable memory is not a problem. It just means we forget to send a birthday card ...'
4. T 'In 1998, an American study calculated that in ninety-five percent of felony cases - the more serious crimes - witness evidence (in other words, people's memories) was the only evidence heard in court.'
5. F '... witnesses reported seeing a white van or truck fleeing several of the crime scenes.'
6. T 'In twenty percent of cases they pointed to a volunteer.'

d)

e)

The author blames the over-reliance on witness memories that are often inaccurate.