If the current Bard is really running on PaLM 2, it still hallucinates worse than GPT-3.5. Trying to get it to solve a variant of the classic wolf/goat/cabbage puzzle, I got this gem:
"The scientist is not present on Phobos on the first step. The Doom Slayer teleports himself and the bunny to Deimos, leaving the scientist on Phobos.
That wasn't a one-off thing, either - it repeatedly contradicted itself several times, often in near-adjacent sentences. You might wonder what this means for the ability to do chain-of-thought... so did I, but apparently the bigger problem is convincing it to do CoT in the first place. But if you do, yeah, it's as bad as you'd expect.
Here are two complete conversations, plus GPT-4 doing the same puzzle for comparison; judge for yourself: https://imgur.com/a/HWLgu3c
"The scientist is not present on Phobos on the first step. The Doom Slayer teleports himself and the bunny to Deimos, leaving the scientist on Phobos.
That wasn't a one-off thing, either - it repeatedly contradicted itself several times, often in near-adjacent sentences. You might wonder what this means for the ability to do chain-of-thought... so did I, but apparently the bigger problem is convincing it to do CoT in the first place. But if you do, yeah, it's as bad as you'd expect.
Here are two complete conversations, plus GPT-4 doing the same puzzle for comparison; judge for yourself: https://imgur.com/a/HWLgu3c