[jna_sh]

Thanks so much for the kind words and thoughtful comment.

Regarding the objective, it's targeting the most common understanding of "frog" and "toad", which for most people will be folk taxonomy, and they probably aren't aware that there's not a scientific taxonomic distinction. So from your list, I think most people will approach it as option "a". However you might be happy to know that when selecting species, there's a couple that are in there because they belong to taxa that contain both "frogs" and "toads", so "b" would be quite difficult!

In that it goes for "a", it's really intended to show that folk taxonomy, like most ways people categorise things, works until it doesn't. Really important to me to note that it's not trying to favour "scientific" taxonomy over folk, though. There's evidence that practicing folk taxonomy, by observing and categorising what you see in nature around you, helps build connectedness with nature, which has a lot of benefits, and making people aware of folk taxonomy as a thing that they contribute to is the ultimate objective.

[jna_sh]

Oh and regarding the score: I chose not to track or display a score because it didn't feel in the spirit of the game, and besides that, there's no fair way to score it. It can't be based on their common name, as shown in the game itself, for example. You could argue that the only way to win is to always press frog, since all toads are frogs by scientific taxonomy, but I don't want to say folk taxonomy is invalid. But really, I don't think the score matters to the learning objective.

Which is why the game doesn't track it, there is in fact not even two buttons.

[District5524]

I see, thanks for the answer!

[joshuahedlund]

Very fascinating. This is common in bird taxonomy as well, for example, with doves/pigeons, or egrets/herons