What are the differences between these three varieties of peppers?

Which ones are the hottest?
Which are the mildest?
How will you know without consuming one of each?
Which ones are appropriate for which purposes?
Does this metadata help?

Are the numbers meaningful to you?
If the numbers are not meaningful, how can you get meaning from the chart?
Are you familiar with the scale being used?
If you are not already familiar, how would you learn enough to use the scale?
What metadata would be more appropriate for your use?
How are you similar to, or different from, the target audience of this metadata?