I agree, trying to generalise anything based on 1 data point is going to be fraught with danger of hastiness.
Having never found a straw in my garden my intuition is that (not finding straws in every garden) is more likely than (finding straws in every garden) but obviously I have no valid basis to put a number of any kind on that.
Now while I think the original post is an example of Hasty Generalisation, I think the bigger issue is the generalisation combined with a sample bias. Self reported data points tend to be interesting because otherwise they wouldn't be reported. My thesis is that regularly finding a straw in your garden is interesting because it is unusual.
Having never found a straw in my garden my intuition is that (not finding straws in every garden) is more likely than (finding straws in every garden) but obviously I have no valid basis to put a number of any kind on that.
Now while I think the original post is an example of Hasty Generalisation, I think the bigger issue is the generalisation combined with a sample bias. Self reported data points tend to be interesting because otherwise they wouldn't be reported. My thesis is that regularly finding a straw in your garden is interesting because it is unusual.