I have written about the poor quality VGA projectors that are still sitting in conference rooms of many companies before, but I myself fell into the trap again yesterday. A presentation that looked great on my computer screen was barely readable in a conference room, I have gotten used to high resolution screens and the option to use thin fonts and very subtle colour shadings. Reminder: these do  not come through on projectors.

Now we have a dilemma:

• Presentations designed for retina displays are not readable on crappy VGA projectors
• Presentations designed for crappy VGA projectors look "1990" on a retina display

My presentation app SlideMagic should be OK, it uses fat Roboto fonts and reasonably blunt shadings. For PowerPoint, think about where your deck will be used most: a person reading the attachment of an email or an audience watching things on the screen. If the latter, test your presentation before the all-or-nothing pitch.