Why has it been suggested that athenian direct democracy was a brilliant failure?

Some people were always criticizing Athenian democracy for various reasons. Here we will see the ancient and modern views about democratic failure:

a) Direct democracy gives all citizens the power to vote but ancient thinkers thought that all citizens could not bear the responsibility comes with the power to rule.

b) Modern thinkers consider it a total failure because the citizens were too inclusive and does not include women, slaves, and foreigners.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering