Introduction to Software Testing

Also ...

• Public pressure in US and UK force laws requiring compensation to victim’s families.
• BOOM!
• Explosions continue!
• Public pressure increases again.
• Newspaper editorials and popular literature reflect growing frustration.

Legislation

• Finally, in 1852, US congress passes a law to require certain changes in steamboat boilers.
• This was the first successful US law regulating product of private enterprise.
• Steamboat boiler explosions start to decline!
• ... but unsafe HPSEs are still being used in locomotives and heavy industry.

Tougher standards

• Later, UK parliament passes very tough standards, which are enforced.
• In 1905, the number of deaths due to HPSE explosions are:
• 14 United Kingdom
• 383 United States
• Eventually, US follows suit and introduces tough standards as well.

“Exploding software?”

• We are now in the computer age
• What are the parallels between HPSEs and safety-critical software systems?