I'm not sure why it's so hard to hoe weeds right up against the wall of a bed, a board, or a rock.
I would have thought that the edge or corner of the hoe would use the obstacle as a cutting board, and slice the root even easier than chopping it out of the soil.
But no. I have to switch to a knife, or lean the paving stone away and then pull.
I understand it being harder to PULL a weed that has a big solid object to cling to.