Frank Hayes, writing in Computerworld, does a great job recounting how an Excel to PDF conversion resulted in Barclays Capital making a multi-million dollar mistake in their offering to buy part of Lehman Brothers. In and of itself, it's an interesting story, but Hayes concludes with this advice for using technology:
Keep it simple.
Don't make assumptions.
And never, ever trust tech more than you really have to.
Agreed.
See a summary of all my Defensive Computing postings.