smithsp86

smithsp86 t1_j63rhix wrote

A furlong is 1/8th of a mile and a chain is 66 feet. So it's just a matter of doing a bit of multiplication. Chain is a super useful measure because most surveying measures are whole multiples of a chain.

The biggest hangup most metric people have with imperial units is conversion factors but once you learn those it's not difficult to use them. My favorite example is tea spoons in a gallon. Yeah it's not immediately intuitive but it's not difficult to figure out if you actually needed to know for some reason. Four quarts to the gallon, four cups to the quart, sixteen tablespoons to the cup, three teaspoons to the tablespoon. Just do a bit of simple multiplication and you're done.

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smithsp86 t1_j1xndom wrote

It’s also a budget strategy thing. Using Spirit and Opportunity as examples. It’s much easier to stay within budget if they only put 90 days on paper. Once you have the hardware in place it becomes essentially automatic to get extra funding to keep operating. There’s just no sense placing the long term plan in the original proposal.

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