However, this can still be useful, as it forces them to use their development card, and you gain some useful information.
When it comes to placing the robber there are a few main things to keep in mind. First, if you know that another player is close to winning you should probably place the robber on them to buy some time. Another thing to pay attention to is their development cards, as they could be knights. If you place the robber on a player with a knight, they may place it back on you as “revenge”. However, this can still be useful, as it forces them to use their development card, and you gain some useful information.