We obsess over the wrong things when building digital products. Lighthouse scores. Core Web Vitals. WCAG compliance checkboxes. These matter, sure. But they miss something fundamental about how humans actually interact with software.
Hi, my name is Tom Smykowski, I'm a staff full-stack engineer. I build and scale SaaS platforms to millions of users, working end-to-end from system architecture to frontend to mobile. On this blog I explore how we build better software for real humans.
I spent years in marketing and product development before I understood this. The metrics we track tell us if a page loads fast. They tell us if a screen reader can parse our HTML. They don't tell us if someone with anxiety will abandon the checkout flow because we hid the shipping costs three clicks deep.
This is cognitive accessibility. And almost nobody talks about it.
The Invisible Barrier
Traditional accessibility focuses on physical limitations. Vision impairment. Motor difficulties. Hearing loss. Important stuff. Ignoring it means roughly 15% of potential users bounce immediately because your product literally doesn't work for them.
But cognitive accessibility goes deeper. It accounts for how different brains process information. Personality types. Attention patterns. Stress responses. Neurodivergent processing styles.
Research from Towson University examined how people with ADHD interact with visual interfaces. Their key discovery: a neurotypical person and someone with ADHD can complete identical tasks with identical accuracy. Your conversion funnel looks the same for both. But one person found it effortless while the other found it draining.
Your dashboard shows two successful conversions. Reality shows one satisfied customer and one who will never return.
The Minimalism Trap
Designers love clean interfaces. Hide the complexity. Show only what's essential.
This approach destroys focus for certain cognitive profiles. When you tuck options into nested menus and collapsible sections, you're asking users to hold a mental map of where everything lives. Some brains do this naturally. Others lose track entirely.