Just tried the demo and found it somewhat confusing "enter your name and your favourite vegetable" is to lure bots into responding? When "I am human", I am as

Just tried the demo and found it somewhat confusing "enter your name and your favourite vegetable" is to lure bots into responding? When "I am human", I am asked to select boats and fail because I didn't tick the images with ships. I would not like to add a Captcha that appears to be smart Alec, has a tendency to trigger the same in the respondents or, worse, makes customers feel stupid. reCaptcha somehow seems better at avoiding this.