Originally Posted by BobM2
It is inconceivable to me that anyone would land a jet aircraft without verifying that spoilers are deployed on touchdown.
Your reaction to failure is a common one but in flight safety work there is no understanding and therefore no preventative value in describing someone's actions as "inconceivable" even if, from our pov it is actually that. It isn't "inconceivable", - it happened.
What you think should have occurred in this or any other accident does not and cannot explain other people's behaviour. One needs to understand why this occurred even if it makes no sense to those looking at this or any other accident with the benefit for example, of all the comments on this thread thus far.
For this to occur the available data must be examined. This means SOPs and training of same, to organizational standards, to maintenance practices, to dissemination of critical safety information throughout the organization, all need to be examined for comparison to what occurred so that causal pathways might be roughly determined to "see" what this crew saw prior to the accident. We already have some information from previous, similar occurrences, (reverse not available).