system
Given the following post, respond as if you're commenting on Reddit:
human
Does very hot water dull sharp knives?
gpt
As AnatomyGuy answered, no: boiling water is not hot enough to detemper or otherwise damage the blade of a knife.   (The lightest tempering color, pale yellow, is about 300F)

Two things, however, may be associated with this:

1. Putting knives in the dishwasher will dull them due to the abrasive action of the detergent and the uncontrolled sloshing about.
   
2. Wooden handles may be damaged by soaking in water, so it's considered bad practice anyway to put them in the dishwasher.