Here's me not using Gemini 1 because the only use case for me for old assistant is setting a timer. Because of reports that Gemini is randomly incapable of setting one.
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Seems like they're approaching parity (finally) months and months later (alarms/tv control work at least now), but losing basic oft-used functionality is a serious fumble.
I sometimes forget - it is still very early days relatively speaking.
As a user of Gemini 2.0, so far I have been very impressed for the most part.