My entire life I have known speach to mean the verb that describes the act of speaking in the present tense, while speech to be the verb that is the past tense act of speaking professionally/publicly to a group.
According to google :The correct spelling is speech. “Speach” is an outdated spelling from hundreds of years ago and is now considered a spelling mistake.
He also had a dog called Einstein and said the name quite a few times, which could subliminally add to the confusion when typing about something loosely related.
What’s weird is that I saw the picture and recognised Doc Brown as Doc Brown, but then when I read that response I didn’t notice the wrong name and instead started remembering the picture as Einstein in the same pose and context. Only when I read your response did I realise I’d been tricked. It’s a reminder how easily a person’s mind can be tricked sometimes.